diff --git a/src/opendms/api/clients/zaken.py b/src/opendms/api/clients/zaken.py
index c1994abd..9670417c 100644
--- a/src/opendms/api/clients/zaken.py
+++ b/src/opendms/api/clients/zaken.py
@@ -2,6 +2,7 @@
 from typing import NotRequired
 
 from msgspec.json import decode
+from zgw_consumers.api_models.zaken import ZaakInformatieObject
 from zgw_consumers.client import build_client
 from zgw_consumers.models import Service
 from zgw_consumers.nlx import NLXClient
@@ -95,6 +96,40 @@ def create_zaak(self, data: dict) -> Zaak:
         response.raise_for_status()
         return decode(response.content, type=Zaak)
 
+    def create_zaakinformatieobject(self, data: dict) -> dict:
+        response = self.post(
+            "zaakinformatieobjecten",
+            json=data,
+        )
+        response.raise_for_status()
+        return response.json()
+
+    def get_paginated_zaakinformatieobjecten(
+        self,
+        params: Mapping[str, object] = {},
+    ) -> dict:
+        results = self.make_request(
+            "zaakinformatieobjecten",
+            params=params,
+            headers=CRS_HEADERS,
+            parse_into=list[ZaakInformatieObject],
+        )
+
+        return {
+            "count": len(results),
+            "results": results,
+        }
+
+    def get_zaakinformatieobject(
+        self,
+        uuid: str,
+    ) -> ZaakInformatieObject:
+        return self.make_request(
+            f"zaakinformatieobjecten/{uuid}",
+            headers=CRS_HEADERS,
+            parse_into=ZaakInformatieObject,
+        )
+
 
 def get_zaken_client(service: Service) -> ZaakClient:
     return build_client(service, client_factory=ZaakClient)
diff --git a/src/opendms/api/openapi.yaml b/src/opendms/api/openapi.yaml
index 59b083f5..d6176e7d 100644
--- a/src/opendms/api/openapi.yaml
+++ b/src/opendms/api/openapi.yaml
@@ -296,6 +296,110 @@ paths:
               schema:
                 $ref: '#/components/schemas/StatusType'
           description: ''
+  /api/v1/services/{serviceSlug}/zaakinformatieobjecten:
+    get:
+      operationId: apiV1ServicesZaakinformatieobjectenList
+      parameters:
+      - name: page
+        required: false
+        in: query
+        description: A page number within the paginated result set.
+        schema:
+          type: integer
+      - name: pageSize
+        required: false
+        in: query
+        description: 'Het aantal resultaten terug te geven per pagina. (default: 100,
+          maximum: 500).'
+        schema:
+          type: integer
+      - in: path
+        name: serviceSlug
+        schema:
+          type: string
+        required: true
+      tags:
+      - api
+      security:
+      - cookieAuth: []
+      responses:
+        '200':
+          headers:
+            API-version:
+              schema:
+                type: string
+              description: 'Geeft een specifieke API-versie aan in de context van
+                een specifieke aanroep. Voorbeeld: 1.2.1.'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/PaginatedZaakInformatieObjectCreateList'
+          description: ''
+    post:
+      operationId: apiV1ServicesZaakinformatieobjectenCreate
+      summary: zaakinformatieobjectCreate
+      parameters:
+      - in: path
+        name: serviceSlug
+        schema:
+          type: string
+        required: true
+      tags:
+      - api
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/ZaakInformatieObjectCreate'
+        required: true
+      security:
+      - cookieAuth: []
+      responses:
+        '201':
+          headers:
+            API-version:
+              schema:
+                type: string
+              description: 'Geeft een specifieke API-versie aan in de context van
+                een specifieke aanroep. Voorbeeld: 1.2.1.'
+          content:
+            application/json:
+              schema:
+                type: object
+                additionalProperties: {}
+          description: ''
+  /api/v1/services/{serviceSlug}/zaakinformatieobjecten/{id}:
+    get:
+      operationId: apiV1ServicesZaakinformatieobjectenRetrieve
+      parameters:
+      - in: path
+        name: id
+        schema:
+          type: string
+          format: uuid
+        required: true
+      - in: path
+        name: serviceSlug
+        schema:
+          type: string
+        required: true
+      tags:
+      - api
+      security:
+      - cookieAuth: []
+      responses:
+        '200':
+          headers:
+            API-version:
+              schema:
+                type: string
+              description: 'Geeft een specifieke API-versie aan in de context van
+                een specifieke aanroep. Voorbeeld: 1.2.1.'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ZaakInformatieObjectCreate'
+          description: ''
   /api/v1/services/{serviceSlug}/zaaktypen:
     get:
       operationId: apiV1ServicesZaaktypenList
@@ -1599,6 +1703,19 @@ components:
           type: array
           items:
             $ref: '#/components/schemas/StatusType'
+    PaginatedZaakInformatieObjectCreateList:
+      type: object
+      required:
+      - count
+      - results
+      properties:
+        count:
+          type: integer
+          example: 123
+        results:
+          type: array
+          items:
+            $ref: '#/components/schemas/ZaakInformatieObjectCreate'
     PaginatedZaakList:
       type: object
       required:
@@ -1979,6 +2096,22 @@ components:
       - startdatum
       - verantwoordelijkeOrganisatie
       - zaaktype
+    ZaakInformatieObjectCreate:
+      type: object
+      properties:
+        zaak:
+          type: string
+          format: uri
+        informatieobject:
+          type: string
+          format: uri
+        titel:
+          type: string
+        beschrijving:
+          type: string
+      required:
+      - informatieobject
+      - zaak
     ZaakType:
       type: object
       properties:
diff --git a/src/opendms/api/serializers.py b/src/opendms/api/serializers.py
index 6ae6d7dd..750848fd 100644
--- a/src/opendms/api/serializers.py
+++ b/src/opendms/api/serializers.py
@@ -697,3 +697,10 @@ class DocumentCreateSerializer(serializers.Serializer):
         child=serializers.CharField(),
         required=False,
     )
+
+
+class ZaakInformatieObjectCreateSerializer(serializers.Serializer):
+    zaak = serializers.URLField()
+    informatieobject = serializers.URLField()
+    titel = serializers.CharField(required=False)
+    beschrijving = serializers.CharField(required=False)
diff --git a/src/opendms/api/tests/files/vcr_cassettes/ServiceZaakInformatieObjectViewSetTests/test_create_zaakinformatieobject.yaml b/src/opendms/api/tests/files/vcr_cassettes/ServiceZaakInformatieObjectViewSetTests/test_create_zaakinformatieobject.yaml
new file mode 100644
index 00000000..455714ce
--- /dev/null
+++ b/src/opendms/api/tests/files/vcr_cassettes/ServiceZaakInformatieObjectViewSetTests/test_create_zaakinformatieobject.yaml
@@ -0,0 +1,55 @@
+interactions:
+- request:
+    body: '{"zaak": "http://localhost:8003/zaken/api/v1/zaken/840a1355-dd6d-48a4-a849-38fbf832db44",
+      "informatieobject": "http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/ea16fa8c-4bab-4065-a28a-f6574625205d"}'
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate, br, zstd
+      Connection:
+      - keep-alive
+      Content-Length:
+      - '219'
+      Content-Type:
+      - application/json
+      User-Agent:
+      - python-requests/2.33.1
+    method: POST
+    uri: http://localhost:8003/zaken/api/v1/zaakinformatieobjecten
+  response:
+    body:
+      string: '{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/7c01c899-b44e-4cb2-8ebc-9d2a48b6a186","uuid":"7c01c899-b44e-4cb2-8ebc-9d2a48b6a186","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/ea16fa8c-4bab-4065-a28a-f6574625205d","zaak":"http://localhost:8003/zaken/api/v1/zaken/840a1355-dd6d-48a4-a849-38fbf832db44","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-06-10T10:47:07.902351Z","vernietigingsdatum":null,"status":null}'
+    headers:
+      API-version:
+      - 1.5.1
+      Allow:
+      - GET, POST, HEAD, OPTIONS
+      Content-Length:
+      - '534'
+      Content-Security-Policy:
+      - 'object-src ''none''; frame-src ''self''; script-src ''self'' ''unsafe-inline''
+        cdnjs.cloudflare.com cdn.jsdelivr.net; font-src ''self'' fonts.gstatic.com;
+        form-action ''self''; base-uri ''self''; frame-ancestors ''none''; worker-src
+        ''self'' blob:; default-src ''self''; style-src ''self'' ''unsafe-inline''
+        fonts.googleapis.com cdnjs.cloudflare.com cdn.jsdelivr.net; img-src ''self''
+        data: cdn.redoc.ly cdnjs.cloudflare.com tile.openstreetmap.org'
+      Content-Type:
+      - application/json
+      Cross-Origin-Opener-Policy:
+      - same-origin
+      Location:
+      - http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/7c01c899-b44e-4cb2-8ebc-9d2a48b6a186
+      Referrer-Policy:
+      - same-origin
+      Vary:
+      - Accept, origin, Cookie
+      X-Content-Type-Options:
+      - nosniff
+      X-Frame-Options:
+      - DENY
+    status:
+      code: 201
+      message: Created
+version: 1
diff --git a/src/opendms/api/tests/files/vcr_cassettes/ServiceZaakInformatieObjectViewSetTests/test_detail_not_found.yaml b/src/opendms/api/tests/files/vcr_cassettes/ServiceZaakInformatieObjectViewSetTests/test_detail_not_found.yaml
new file mode 100644
index 00000000..e4d9e59f
--- /dev/null
+++ b/src/opendms/api/tests/files/vcr_cassettes/ServiceZaakInformatieObjectViewSetTests/test_detail_not_found.yaml
@@ -0,0 +1,52 @@
+interactions:
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Crs:
+      - EPSG:4326
+      Accept-Encoding:
+      - gzip, deflate, br, zstd
+      Connection:
+      - keep-alive
+      Content-Crs:
+      - EPSG:4326
+      User-Agent:
+      - python-requests/2.33.1
+    method: GET
+    uri: http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/00000000-0000-0000-0000-000000000000
+  response:
+    body:
+      string: '{"type":"http://localhost:8003/ref/fouten/NotFound/","code":"not_found","title":"Niet
+        gevonden.","status":404,"detail":"Niet gevonden.","instance":"urn:uuid:8ab7e2b1-7e64-4792-be23-166f51aacb62"}'
+    headers:
+      API-version:
+      - 1.5.1
+      Allow:
+      - GET, PUT, PATCH, DELETE, HEAD, OPTIONS
+      Content-Length:
+      - '195'
+      Content-Security-Policy:
+      - 'object-src ''none''; frame-src ''self''; script-src ''self'' ''unsafe-inline''
+        cdnjs.cloudflare.com cdn.jsdelivr.net; font-src ''self'' fonts.gstatic.com;
+        form-action ''self''; base-uri ''self''; frame-ancestors ''none''; worker-src
+        ''self'' blob:; default-src ''self''; style-src ''self'' ''unsafe-inline''
+        fonts.googleapis.com cdnjs.cloudflare.com cdn.jsdelivr.net; img-src ''self''
+        data: cdn.redoc.ly cdnjs.cloudflare.com tile.openstreetmap.org'
+      Content-Type:
+      - application/json
+      Cross-Origin-Opener-Policy:
+      - same-origin
+      Referrer-Policy:
+      - same-origin
+      Vary:
+      - Accept, origin, Cookie
+      X-Content-Type-Options:
+      - nosniff
+      X-Frame-Options:
+      - DENY
+    status:
+      code: 404
+      message: Not Found
+version: 1
diff --git a/src/opendms/api/tests/files/vcr_cassettes/ServiceZaakInformatieObjectViewSetTests/test_detail_zaakinformatieobject.yaml b/src/opendms/api/tests/files/vcr_cassettes/ServiceZaakInformatieObjectViewSetTests/test_detail_zaakinformatieobject.yaml
new file mode 100644
index 00000000..3072f4ae
--- /dev/null
+++ b/src/opendms/api/tests/files/vcr_cassettes/ServiceZaakInformatieObjectViewSetTests/test_detail_zaakinformatieobject.yaml
@@ -0,0 +1,54 @@
+interactions:
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Crs:
+      - EPSG:4326
+      Accept-Encoding:
+      - gzip, deflate, br, zstd
+      Connection:
+      - keep-alive
+      Content-Crs:
+      - EPSG:4326
+      User-Agent:
+      - python-requests/2.33.1
+    method: GET
+    uri: http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/f931b3f6-f92e-4c46-b484-f68aa68acc18
+  response:
+    body:
+      string: '{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/f931b3f6-f92e-4c46-b484-f68aa68acc18","uuid":"f931b3f6-f92e-4c46-b484-f68aa68acc18","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/a9c82615-cee7-4e9d-b7a8-460623882c38","zaak":"http://localhost:8003/zaken/api/v1/zaken/840a1355-dd6d-48a4-a849-38fbf832db44","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:18.968000Z","vernietigingsdatum":null,"status":null}'
+    headers:
+      API-version:
+      - 1.5.1
+      Allow:
+      - GET, PUT, PATCH, DELETE, HEAD, OPTIONS
+      Content-Length:
+      - '534'
+      Content-Security-Policy:
+      - 'object-src ''none''; frame-src ''self''; script-src ''self'' ''unsafe-inline''
+        cdnjs.cloudflare.com cdn.jsdelivr.net; font-src ''self'' fonts.gstatic.com;
+        form-action ''self''; base-uri ''self''; frame-ancestors ''none''; worker-src
+        ''self'' blob:; default-src ''self''; style-src ''self'' ''unsafe-inline''
+        fonts.googleapis.com cdnjs.cloudflare.com cdn.jsdelivr.net; img-src ''self''
+        data: cdn.redoc.ly cdnjs.cloudflare.com tile.openstreetmap.org'
+      Content-Type:
+      - application/json
+      Cross-Origin-Opener-Policy:
+      - same-origin
+      ETag:
+      - '"8c0b5e87d0ec32426a0574fcd7f272fd"'
+      Referrer-Policy:
+      - same-origin
+      Vary:
+      - Accept, origin, Cookie
+      X-Content-Type-Options:
+      - nosniff
+      X-Frame-Options:
+      - DENY
+    status:
+      code: 200
+      message: OK
+version: 1
diff --git a/src/opendms/api/tests/files/vcr_cassettes/ServiceZaakInformatieObjectViewSetTests/test_list_zaakinformatieobjecten.yaml b/src/opendms/api/tests/files/vcr_cassettes/ServiceZaakInformatieObjectViewSetTests/test_list_zaakinformatieobjecten.yaml
new file mode 100644
index 00000000..1610cb19
--- /dev/null
+++ b/src/opendms/api/tests/files/vcr_cassettes/ServiceZaakInformatieObjectViewSetTests/test_list_zaakinformatieobjecten.yaml
@@ -0,0 +1,73 @@
+interactions:
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Crs:
+      - EPSG:4326
+      Accept-Encoding:
+      - gzip, deflate, br, zstd
+      Connection:
+      - keep-alive
+      Content-Crs:
+      - EPSG:4326
+      User-Agent:
+      - python-requests/2.33.1
+    method: GET
+    uri: http://localhost:8003/zaken/api/v1/zaakinformatieobjecten
+  response:
+    body:
+      string: '[{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/82810fe8-ad64-4a4c-829b-44b1c4af2d03","uuid":"82810fe8-ad64-4a4c-829b-44b1c4af2d03","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/a9c82615-cee7-4e9d-b7a8-460623882c38","zaak":"http://localhost:8003/zaken/api/v1/zaken/da18b89e-e7ac-49b2-9f5d-d6ef327e1b1d","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-06-10T10:06:46.779152Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/f477afb0-24c1-47c2-8d74-c424da4e9e61","uuid":"f477afb0-24c1-47c2-8d74-c424da4e9e61","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/547fd056-0bcc-486b-b02a-18b40457d56f","zaak":"http://localhost:8003/zaken/api/v1/zaken/da18b89e-e7ac-49b2-9f5d-d6ef327e1b1d","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-06-04T15:18:16.863518Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/e92f4253-83a6-4f78-8249-458b81b32b91","uuid":"e92f4253-83a6-4f78-8249-458b81b32b91","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/d34816d6-50c6-49ea-9b84-4803cbc45a3a","zaak":"http://localhost:8003/zaken/api/v1/zaken/2ae1c6df-c7f7-43c4-8d69-40db7022ccc2","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:20.571000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/f40d0d92-56b4-4972-a01c-f5989f9c3f5d","uuid":"f40d0d92-56b4-4972-a01c-f5989f9c3f5d","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/ef55f9ea-4004-4832-803e-2672bb1c6d4d","zaak":"http://localhost:8003/zaken/api/v1/zaken/85169f14-b860-4590-8787-4e026f90703e","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:20.525000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/36f57df2-e0d6-4c7c-979b-905a37aee3f9","uuid":"36f57df2-e0d6-4c7c-979b-905a37aee3f9","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/2f3722d8-c919-495b-a973-0802bd678887","zaak":"http://localhost:8003/zaken/api/v1/zaken/8c8375cf-f780-4c97-9ef5-630d55423a2e","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:20.418000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/1075043c-ee8a-4392-8397-e4ca0a886ac2","uuid":"1075043c-ee8a-4392-8397-e4ca0a886ac2","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/6df0ae09-0f21-4c8e-bc49-5bb23915f606","zaak":"http://localhost:8003/zaken/api/v1/zaken/bc5d35a8-956d-4b94-80af-86796d626f08","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:20.269000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/1cdc89db-7678-46ea-b2cb-03b3d80b1819","uuid":"1cdc89db-7678-46ea-b2cb-03b3d80b1819","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/819c31fc-81e0-4d96-990f-6221cbe987c6","zaak":"http://localhost:8003/zaken/api/v1/zaken/df01f13a-844d-4901-9fe4-dd19603557c2","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:20.187000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/b489a7de-3f66-4fa6-9bb1-12c01befbc35","uuid":"b489a7de-3f66-4fa6-9bb1-12c01befbc35","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/fc58a8f1-f2f0-4eb8-919c-4360f91a3415","zaak":"http://localhost:8003/zaken/api/v1/zaken/2c8c15af-4fdc-4b6a-a29c-75df40df38ed","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:20.095000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/b647cdee-9a95-4681-861d-b57e8eea5021","uuid":"b647cdee-9a95-4681-861d-b57e8eea5021","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/801ddfea-a4a6-4846-9887-1efc0adb910b","zaak":"http://localhost:8003/zaken/api/v1/zaken/3c3f01b0-359b-4f68-9b0a-813e6cce4817","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:19.985000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/c077f3c3-02ad-44d6-a242-54c7a0413bee","uuid":"c077f3c3-02ad-44d6-a242-54c7a0413bee","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/c4a2d123-1817-4b3a-a330-67c1282b1594","zaak":"http://localhost:8003/zaken/api/v1/zaken/71f05dee-6ded-4e81-bef8-4a141912d73d","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:19.890000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/5a9acb7b-db93-49b5-9b52-f263a00e1dea","uuid":"5a9acb7b-db93-49b5-9b52-f263a00e1dea","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/dbfe1f09-2803-4a40-862c-f2ca75f384d1","zaak":"http://localhost:8003/zaken/api/v1/zaken/fc35705e-6a27-46c8-8cf1-b3119dba7bde","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:19.808000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/f7b8d99e-37b9-420f-a74a-5d8a03e5b391","uuid":"f7b8d99e-37b9-420f-a74a-5d8a03e5b391","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/f7eec7ce-9bae-4b15-8928-2c87d0071def","zaak":"http://localhost:8003/zaken/api/v1/zaken/30876d53-51f3-4d75-a132-d8764f55e1e5","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:19.702000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/e7a265d7-36ef-4c34-9dea-eff00e8723c6","uuid":"e7a265d7-36ef-4c34-9dea-eff00e8723c6","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/0faee041-27ec-4b81-99a0-42ebab29a7db","zaak":"http://localhost:8003/zaken/api/v1/zaken/511f30e1-7538-48c0-af85-41e76a38cd24","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:19.563000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/d4ddeace-80fc-4cd4-8c86-e6a4761e7d94","uuid":"d4ddeace-80fc-4cd4-8c86-e6a4761e7d94","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/f8c1d2cc-780e-452a-8871-187048341200","zaak":"http://localhost:8003/zaken/api/v1/zaken/f0502f2c-ace2-42b0-9d3d-84e3543d8b6a","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:19.484000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/49b83ac3-95ff-4343-b3f7-7adf7bd8efc6","uuid":"49b83ac3-95ff-4343-b3f7-7adf7bd8efc6","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/10e3074d-c0ee-49e0-b099-6abe066cd56a","zaak":"http://localhost:8003/zaken/api/v1/zaken/8687acc6-3386-4a84-98f0-07a1d53db5ae","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:19.443000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/b7886b37-06d6-4bf3-99b3-4206f194e23a","uuid":"b7886b37-06d6-4bf3-99b3-4206f194e23a","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/a2d46f98-baa0-4b33-9c87-c14517ae695b","zaak":"http://localhost:8003/zaken/api/v1/zaken/918b7c32-c0f1-4a1f-b50b-e803e6694fa4","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:19.334000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/984cc103-cf37-40cb-81d4-14bcbc51d03e","uuid":"984cc103-cf37-40cb-81d4-14bcbc51d03e","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/435b77c7-db8d-47cf-b2df-eea3a91089ee","zaak":"http://localhost:8003/zaken/api/v1/zaken/d89fc6fd-29ce-493d-b27d-b2e4fd4424fe","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:19.317000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/f3c93780-6fd8-47fb-9af6-9b18f81b3b88","uuid":"f3c93780-6fd8-47fb-9af6-9b18f81b3b88","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/630f20a5-b099-4d84-a504-51796b6c5504","zaak":"http://localhost:8003/zaken/api/v1/zaken/6ef989c2-4df9-44fa-8b8a-e48a87a12b3f","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:19.255000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/2151e4f5-b7a3-4d23-9644-431727cb5b40","uuid":"2151e4f5-b7a3-4d23-9644-431727cb5b40","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/4d5e39b0-e83f-4ff3-b8c8-6b3eb5b24867","zaak":"http://localhost:8003/zaken/api/v1/zaken/94bbcc1c-24ce-49ee-8855-62aed026a830","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:19.157000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/190f1178-4701-438b-840e-16a1fadaaf10","uuid":"190f1178-4701-438b-840e-16a1fadaaf10","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/bd173e9d-d97d-4a2c-858d-d0c9ba72f7cc","zaak":"http://localhost:8003/zaken/api/v1/zaken/34faf0d8-7dce-460f-8e63-063b137374fb","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:19.043000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/f931b3f6-f92e-4c46-b484-f68aa68acc18","uuid":"f931b3f6-f92e-4c46-b484-f68aa68acc18","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/a9c82615-cee7-4e9d-b7a8-460623882c38","zaak":"http://localhost:8003/zaken/api/v1/zaken/840a1355-dd6d-48a4-a849-38fbf832db44","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:18.968000Z","vernietigingsdatum":null,"status":null},{"url":"http://localhost:8003/zaken/api/v1/zaakinformatieobjecten/efef805d-87f2-4e9a-86ed-98a6dfe9deb1","uuid":"efef805d-87f2-4e9a-86ed-98a6dfe9deb1","informatieobject":"http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/ea16fa8c-4bab-4065-a28a-f6574625205d","zaak":"http://localhost:8003/zaken/api/v1/zaken/da18b89e-e7ac-49b2-9f5d-d6ef327e1b1d","aardRelatieWeergave":"Hoort
+        bij, omgekeerd: kent","titel":"","beschrijving":"","registratiedatum":"2026-03-25T11:39:18.944000Z","vernietigingsdatum":null,"status":null}]'
+    headers:
+      API-version:
+      - 1.5.1
+      Allow:
+      - GET, POST, HEAD, OPTIONS
+      Content-Length:
+      - '11771'
+      Content-Security-Policy:
+      - 'object-src ''none''; frame-src ''self''; script-src ''self'' ''unsafe-inline''
+        cdnjs.cloudflare.com cdn.jsdelivr.net; font-src ''self'' fonts.gstatic.com;
+        form-action ''self''; base-uri ''self''; frame-ancestors ''none''; worker-src
+        ''self'' blob:; default-src ''self''; style-src ''self'' ''unsafe-inline''
+        fonts.googleapis.com cdnjs.cloudflare.com cdn.jsdelivr.net; img-src ''self''
+        data: cdn.redoc.ly cdnjs.cloudflare.com tile.openstreetmap.org'
+      Content-Type:
+      - application/json
+      Cross-Origin-Opener-Policy:
+      - same-origin
+      Referrer-Policy:
+      - same-origin
+      Vary:
+      - Accept, origin, Cookie
+      X-Content-Type-Options:
+      - nosniff
+      X-Frame-Options:
+      - DENY
+    status:
+      code: 200
+      message: OK
+version: 1
diff --git a/src/opendms/api/tests/test_zaak.py b/src/opendms/api/tests/test_zaak.py
index 9ddea5f5..9f02e49c 100644
--- a/src/opendms/api/tests/test_zaak.py
+++ b/src/opendms/api/tests/test_zaak.py
@@ -1,6 +1,9 @@
+from unittest.mock import Mock, patch
+
 from django.urls import NoReverseMatch
 
 from maykin_common.vcr import VCRMixin
+from requests import HTTPError
 from requests.exceptions import RequestException
 from rest_framework import status
 from vng_api_common.tests import reverse
@@ -548,3 +551,140 @@ def test_create_zaak(self):
 
         self.assertIn("uuid", data)
         self.assertIn("url", data)
+
+
+class ServiceZaakInformatieObjectViewSetTests(VCRMixin, APITestCase):
+    @classmethod
+    def setUpTestData(cls):
+        super().setUpTestData()
+
+        cls.ztc_service = ServiceFactory.create(for_ztc_service_docker_compose=True)
+        cls.zrc_service = ServiceFactory.create(for_zrc_service_docker_compose=True)
+
+        cls.configuration = ZGWApiGroupConfigFactory.create(
+            ztc_service=cls.ztc_service,
+            zrc_service=cls.zrc_service,
+        )
+
+        cls.list_url = reverse(
+            "api:service-zaakinformatieobjecten-list",
+            kwargs={"service_slug": cls.ztc_service.slug},
+        )
+
+    def test_list_zaakinformatieobjecten(self):
+        response = self.client.get(self.list_url)
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+        data = response.json()
+
+        self.assertGreater(data["count"], 0)
+        self.assertGreater(len(data["results"]), 0)
+
+    def test_create_requires_required_fields(self):
+        response = self.client.post(
+            self.list_url,
+            {},
+            format="json",
+        )
+
+        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
+
+        invalid_params = response.json()["invalidParams"]
+        invalid_param_names = {param["name"] for param in invalid_params}
+
+        self.assertIn("zaak", invalid_param_names)
+        self.assertIn("informatieobject", invalid_param_names)
+
+    def test_create_zaakinformatieobject(self):
+        payload = {
+            "zaak": "http://localhost:8003/zaken/api/v1/zaken/840a1355-dd6d-48a4-a849-38fbf832db44",
+            "informatieobject": "http://localhost:8003/documenten/api/v1/enkelvoudiginformatieobjecten/ea16fa8c-4bab-4065-a28a-f6574625205d",
+        }
+
+        response = self.client.post(
+            self.list_url,
+            payload,
+            format="json",
+        )
+        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
+
+        data = response.json()
+
+        self.assertEqual(data["zaak"], payload["zaak"])
+        self.assertEqual(
+            data["informatieobject"],
+            payload["informatieobject"],
+        )
+
+    @patch("opendms.api.viewsets.get_zaken_client")
+    def test_create_forwards_remote_validation_errors(
+        self,
+        mock_get_zaken_client,
+    ):
+        response_mock = Mock()
+        response_mock.status_code = 400
+        response_mock.json.return_value = {
+            "invalidParams": [
+                {
+                    "name": "nonFieldErrors",
+                    "code": "unique",
+                }
+            ]
+        }
+
+        client = Mock()
+        client.create_zaakinformatieobject.side_effect = HTTPError(
+            response=response_mock
+        )
+        mock_get_zaken_client.return_value.__enter__.return_value = client
+
+        response = self.client.post(
+            self.list_url,
+            {
+                "zaak": "http://example.com/zaak",
+                "informatieobject": "http://example.com/document",
+            },
+            format="json",
+        )
+
+        self.assertEqual(response.status_code, 400)
+        self.assertEqual(
+            response.json()["invalidParams"][0]["code"],
+            "unique",
+        )
+
+    def test_detail_zaakinformatieobject(self):
+        zio_uuid = "f931b3f6-f92e-4c46-b484-f68aa68acc18"
+
+        detail_url = reverse(
+            "api:service-zaakinformatieobjecten-detail",
+            kwargs={
+                "service_slug": self.ztc_service.slug,
+                "pk": zio_uuid,
+            },
+        )
+
+        response = self.client.get(detail_url)
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(
+            response.json()["zaak"],
+            "http://localhost:8003/zaken/api/v1/zaken/840a1355-dd6d-48a4-a849-38fbf832db44",
+        )
+
+    def test_detail_not_found(self):
+        response = self.client.get(
+            reverse(
+                "api:service-zaakinformatieobjecten-detail",
+                kwargs={
+                    "service_slug": self.ztc_service.slug,
+                    "pk": "00000000-0000-0000-0000-000000000000",
+                },
+            )
+        )
+
+        self.assertEqual(
+            response.status_code,
+            status.HTTP_404_NOT_FOUND,
+        )
diff --git a/src/opendms/api/urls.py b/src/opendms/api/urls.py
index 8e9f8506..6e7ed030 100644
--- a/src/opendms/api/urls.py
+++ b/src/opendms/api/urls.py
@@ -10,6 +10,7 @@
     InformatieObjectTypeViewSet,
     SearchView,
     ServiceViewSet,
+    ServiceZaakInformatieObjectViewSet,
     ServiceZaakViewSet,
     StatusTypeListViewSet,
     StatusTypeViewSet,
@@ -44,7 +45,11 @@
     ServiceZaakViewSet,
     basename="service-zaken",
 )
-
+service_router.register(
+    r"zaakinformatieobjecten",
+    ServiceZaakInformatieObjectViewSet,
+    basename="service-zaakinformatieobjecten",
+)
 service_router.register(
     r"statustypen",
     StatusTypeViewSet,
diff --git a/src/opendms/api/utils/schema.py b/src/opendms/api/utils/schema.py
index b5baac44..8adb5be3 100644
--- a/src/opendms/api/utils/schema.py
+++ b/src/opendms/api/utils/schema.py
@@ -84,7 +84,6 @@ def param(
     location: str = OpenApiParameter.QUERY,
     required: bool = False,
 ) -> OpenApiParameter:
-
     return OpenApiParameter(
         name=name,
         type=type_param,
diff --git a/src/opendms/api/viewsets.py b/src/opendms/api/viewsets.py
index 09df548d..af8184c2 100644
--- a/src/opendms/api/viewsets.py
+++ b/src/opendms/api/viewsets.py
@@ -18,6 +18,7 @@
     extend_schema,
     extend_schema_view,
 )
+from requests import HTTPError
 from rest_framework import status, viewsets
 from rest_framework.decorators import action
 from rest_framework.filters import SearchFilter
@@ -50,6 +51,7 @@
     ServiceSerializer,
     StatusTypeSerializer,
     ZaakCreateSerializer,
+    ZaakInformatieObjectCreateSerializer,
     ZaakSerializer,
     ZaakTypeSerializer,
 )
@@ -906,3 +908,82 @@ def get_object(self) -> InformatieObjectType:
 
         with get_informatieobjecttypen_client(self.service) as client:
             return client.get_item_by_uuid(uuid)
+
+
+@extend_schema_view(
+    list=extend_schema(
+        parameters=[
+            OpenApiParameter(
+                name="service_slug",
+                type=OpenApiTypes.STR,
+                location=OpenApiParameter.PATH,
+                required=True,
+            ),
+        ]
+    ),
+    retrieve=extend_schema(
+        parameters=[
+            OpenApiParameter(
+                name="service_slug",
+                type=OpenApiTypes.STR,
+                location=OpenApiParameter.PATH,
+                required=True,
+            ),
+            OpenApiParameter(
+                name="id",
+                type=OpenApiTypes.UUID,
+                location=OpenApiParameter.PATH,
+                required=True,
+            ),
+        ],
+    ),
+)
+class ServiceZaakInformatieObjectViewSet(
+    ReadOnlyViewSetMixin,
+    viewsets.ViewSet,
+):
+    serializer_class = ZaakInformatieObjectCreateSerializer
+    pagination_class = CountedPagination
+    queryset = None
+    lookup_field = "pk"
+
+    def get_paginated_queryset(self, params):
+        with get_zaken_client(self.zgw_group.zrc_service) as client:
+            return client.get_paginated_zaakinformatieobjecten(params)
+
+    def get_object(self):
+        uuid = self.kwargs[self.lookup_field]
+
+        with get_zaken_client(self.zgw_group.zrc_service) as client:
+            return client.get_zaakinformatieobject(uuid)
+
+    @extend_schema(
+        summary="zaakinformatieobjectCreate",
+        parameters=[
+            OpenApiParameter(
+                name="service_slug",
+                type=OpenApiTypes.STR,
+                location=OpenApiParameter.PATH,
+                required=True,
+            ),
+        ],
+        request=ZaakInformatieObjectCreateSerializer,
+        responses={201: OpenApiTypes.OBJECT},
+    )
+    def create(self, request, *args, **kwargs):
+        serializer = self.serializer_class(data=request.data)
+        serializer.is_valid(raise_exception=True)
+
+        try:
+            with get_zaken_client(self.zgw_group.zrc_service) as client:
+                result = client.create_zaakinformatieobject(serializer.validated_data)
+        except HTTPError as exc:
+            return Response(
+                exc.response.json(),
+                status=exc.response.status_code,
+            )
+
+        return Response(
+            result,
+            status=status.HTTP_201_CREATED,
+        )
diff --git a/src/opendms/frontend/src/types/schema.d.ts b/src/opendms/frontend/src/types/schema.d.ts
index d9ea4ed0..611060e6 100644
--- a/src/opendms/frontend/src/types/schema.d.ts
+++ b/src/opendms/frontend/src/types/schema.d.ts
@@ -172,6 +172,39 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/api/v1/services/{serviceSlug}/zaakinformatieobjecten": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get: operations["apiV1ServicesZaakinformatieobjectenList"];
+        put?: never;
+        /** zaakinformatieobjectCreate */
+        post: operations["apiV1ServicesZaakinformatieobjectenCreate"];
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/api/v1/services/{serviceSlug}/zaakinformatieobjecten/{id}": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get: operations["apiV1ServicesZaakinformatieobjectenRetrieve"];
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/api/v1/services/{serviceSlug}/zaaktypen": {
         parameters: {
             query?: never;
@@ -750,6 +783,11 @@ export interface components {
             count: number;
             results: components["schemas"]["StatusType"][];
         };
+        PaginatedZaakInformatieObjectCreateList: {
+            /** @example 123 */
+            count: number;
+            results: components["schemas"]["ZaakInformatieObjectCreate"][];
+        };
         PaginatedZaakList: {
             /** @example 123 */
             count: number;
@@ -966,6 +1004,14 @@ export interface components {
             bronorganisatie: string;
             verantwoordelijkeOrganisatie: string;
         };
+        ZaakInformatieObjectCreate: {
+            /** Format: uri */
+            zaak: string;
+            /** Format: uri */
+            informatieobject: string;
+            titel?: string;
+            beschrijving?: string;
+        };
         ZaakType: {
             /**
              * Format: uuid
@@ -1246,6 +1292,87 @@ export interface operations {
             };
         };
     };
+    apiV1ServicesZaakinformatieobjectenList: {
+        parameters: {
+            query?: {
+                /** @description A page number within the paginated result set. */
+                page?: number;
+                /** @description Het aantal resultaten terug te geven per pagina. (default: 100, maximum: 500). */
+                pageSize?: number;
+            };
+            header?: never;
+            path: {
+                serviceSlug: string;
+            };
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            200: {
+                headers: {
+                    /** @description Geeft een specifieke API-versie aan in de context van een specifieke aanroep. Voorbeeld: 1.2.1. */
+                    "API-version"?: string;
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["PaginatedZaakInformatieObjectCreateList"];
+                };
+            };
+        };
+    };
+    apiV1ServicesZaakinformatieobjectenCreate: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                serviceSlug: string;
+            };
+            cookie?: never;
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["ZaakInformatieObjectCreate"];
+            };
+        };
+        responses: {
+            201: {
+                headers: {
+                    /** @description Geeft een specifieke API-versie aan in de context van een specifieke aanroep. Voorbeeld: 1.2.1. */
+                    "API-version"?: string;
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": {
+                        [key: string]: unknown;
+                    };
+                };
+            };
+        };
+    };
+    apiV1ServicesZaakinformatieobjectenRetrieve: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                id: string;
+                serviceSlug: string;
+            };
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            200: {
+                headers: {
+                    /** @description Geeft een specifieke API-versie aan in de context van een specifieke aanroep. Voorbeeld: 1.2.1. */
+                    "API-version"?: string;
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["ZaakInformatieObjectCreate"];
+                };
+            };
+        };
+    };
     apiV1ServicesZaaktypenList: {
         parameters: {
             query?: {