diff --git a/packages/discord.js/src/index.js b/packages/discord.js/src/index.js
index 3a344e146989..51ea4f6fd918 100644
--- a/packages/discord.js/src/index.js
+++ b/packages/discord.js/src/index.js
@@ -103,6 +103,8 @@ exports.VoiceStateManager = require('./managers/VoiceStateManager.js').VoiceStat
 // Structures
 exports.ActionRow = require('./structures/ActionRow.js').ActionRow;
 exports.Activity = require('./structures/Presence.js').Activity;
+exports.ActivityInstance = require('./structures/ActivityInstance.js').ActivityInstance;
+exports.ActivityLocation = require('./structures/ActivityLocation.js').ActivityLocation;
 exports.AnnouncementChannel = require('./structures/AnnouncementChannel.js').AnnouncementChannel;
 exports.AnonymousGuild = require('./structures/AnonymousGuild.js').AnonymousGuild;
 exports.AuthorizingIntegrationOwners =
diff --git a/packages/discord.js/src/structures/ActivityInstance.js b/packages/discord.js/src/structures/ActivityInstance.js
new file mode 100644
index 000000000000..3e27f0a5b1e4
--- /dev/null
+++ b/packages/discord.js/src/structures/ActivityInstance.js
@@ -0,0 +1,52 @@
+'use strict';
+
+const { ActivityLocation } = require('./ActivityLocation.js');
+const { Base } = require('./Base.js');
+
+/**
+ * Represents an activity instance.
+ *
+ * @extends {Base}
+ */
+class ActivityInstance extends Base {
+  constructor(client, data) {
+    super(client);
+
+    /**
+     * The id of the application
+     *
+     * @type {Snowflake}
+     */
+    this.applicationId = data.application_id;
+
+    /**
+     * The activity instance id
+     *
+     * @type {string}
+     */
+    this.instanceId = data.instance_id;
+
+    /**
+     * The unique identifier for the launch
+     *
+     * @type {Snowflake}
+     */
+    this.launchId = data.launch_id;
+
+    /**
+     * The location the instance is running in
+     *
+     * @type {ActivityLocation}
+     */
+    this.location = new ActivityLocation(client, data.location);
+
+    /**
+     * The ids of the users connected to the instance
+     *
+     * @type {Snowflake[]}
+     */
+    this.users = data.users;
+  }
+}
+
+exports.ActivityInstance = ActivityInstance;
diff --git a/packages/discord.js/src/structures/ActivityLocation.js b/packages/discord.js/src/structures/ActivityLocation.js
new file mode 100644
index 000000000000..684b8c9df014
--- /dev/null
+++ b/packages/discord.js/src/structures/ActivityLocation.js
@@ -0,0 +1,65 @@
+'use strict';
+
+const { Base } = require('./Base.js');
+
+/**
+ * Represents the location of an activity instance.
+ *
+ * @extends {Base}
+ */
+class ActivityLocation extends Base {
+  constructor(client, data) {
+    super(client);
+
+    /**
+     * The unique identifier for the location
+     *
+     * @type {string}
+     */
+    this.id = data.id;
+
+    /**
+     * The kind of location
+     *
+     * @type {ActivityLocationKind}
+     */
+    this.kind = data.kind;
+
+    /**
+     * The id of the channel
+     *
+     * @type {Snowflake}
+     */
+    this.channelId = data.channel_id;
+
+    /**
+     * The id of the guild
+     *
+     * @type {?Snowflake}
+     */
+    this.guildId = data.guild_id ?? null;
+  }
+
+  /**
+   * The channel of this activity location
+   *
+   * @type {?Channel}
+   * @readonly
+   */
+  get channel() {
+    return this.client.channels.cache.get(this.channelId) ?? null;
+  }
+
+  /**
+   * The guild of this activity location
+   *
+   * @type {?Guild}
+   * @readonly
+   */
+  get guild() {
+    if (!this.guildId) return null;
+    return this.client.guilds.cache.get(this.guildId) ?? null;
+  }
+}
+
+exports.ActivityLocation = ActivityLocation;
diff --git a/packages/discord.js/src/structures/ClientApplication.js b/packages/discord.js/src/structures/ClientApplication.js
index 072286a8e4f1..a4249d2f8ce6 100644
--- a/packages/discord.js/src/structures/ClientApplication.js
+++ b/packages/discord.js/src/structures/ClientApplication.js
@@ -9,6 +9,7 @@ const { SubscriptionManager } = require('../managers/SubscriptionManager.js');
 const { ApplicationFlagsBitField } = require('../util/ApplicationFlagsBitField.js');
 const { resolveImage } = require('../util/DataResolver.js');
 const { PermissionsBitField } = require('../util/PermissionsBitField.js');
+const { ActivityInstance } = require('./ActivityInstance.js');
 const { ApplicationRoleConnectionMetadata } = require('./ApplicationRoleConnectionMetadata.js');
 const { SKU } = require('./SKU.js');
 const { Team } = require('./Team.js');
@@ -446,6 +447,17 @@ class ClientApplication extends Application {
     const skus = await this.client.rest.get(Routes.skus(this.id));
     return skus.reduce((coll, sku) => coll.set(sku.id, new SKU(this.client, sku)), new Collection());
   }
+
+  /**
+   * Fetches an activity instance for this application.
+   *
+   * @param {string} instanceId The id of the activity instance
+   * @returns {Promise<ActivityInstance>}
+   */
+  async fetchActivityInstance(instanceId) {
+    const data = await this.client.rest.get(Routes.applicationActivityInstance(this.id, instanceId));
+    return new ActivityInstance(this.client, data);
+  }
 }
 
 exports.ClientApplication = ClientApplication;
diff --git a/packages/discord.js/src/util/APITypes.js b/packages/discord.js/src/util/APITypes.js
index 1e11f869279b..75638dbd185d 100644
--- a/packages/discord.js/src/util/APITypes.js
+++ b/packages/discord.js/src/util/APITypes.js
@@ -5,6 +5,11 @@
  * @see {@link https://discord-api-types.dev/api/discord-api-types-v10/enum/ActivityFlags}
  */
 
+/**
+ * @external ActivityLocationKind
+ * @see {@link https://discord-api-types.dev/api/discord-api-types-v10/enum/ActivityLocationKind}
+ */
+
 /**
  * @external ActivityType
  * @see {@link https://discord-api-types.dev/api/discord-api-types-v10/enum/ActivityType}
diff --git a/packages/discord.js/typings/index.d.ts b/packages/discord.js/typings/index.d.ts
index be0aeac86f0f..ddd06359558b 100644
--- a/packages/discord.js/typings/index.d.ts
+++ b/packages/discord.js/typings/index.d.ts
@@ -9,6 +9,9 @@ import { WebSocketManager, WebSocketManagerOptions } from '@discordjs/ws';
 import { AsyncEventEmitter } from '@vladfrangu/async_event_emitter';
 import {
   ActivityFlags,
+  APIActivityInstance,
+  APIActivityLocation,
+  ActivityLocationKind,
   ActivityType,
   APIActionRowComponent,
   APIApplicationCommand,
@@ -246,6 +249,25 @@ export class Activity {
   public toString(): string;
 }
 
+export class ActivityInstance extends Base {
+  private constructor(client: Client<true>, data: APIActivityInstance);
+  public applicationId: Snowflake;
+  public instanceId: string;
+  public launchId: Snowflake;
+  public location: ActivityLocation;
+  public users: Snowflake[];
+}
+
+export class ActivityLocation extends Base {
+  private constructor(client: Client<true>, data: APIActivityLocation);
+  public id: string;
+  public kind: ActivityLocationKind;
+  public channelId: Snowflake;
+  public guildId: Snowflake | null;
+  public get channel(): Channel | null;
+  public get guild(): Guild | null;
+}
+
 export type ActivityFlagsString = keyof typeof ActivityFlags;
 
 export interface BaseComponentData {
@@ -1004,6 +1026,7 @@ export class ClientApplication extends Application {
   public roleConnectionsVerificationURL: string | null;
   public edit(options: ClientApplicationEditOptions): Promise<ClientApplication>;
   public fetch(): Promise<ClientApplication>;
+  public fetchActivityInstance(instanceId: string): Promise<ActivityInstance>;
   public fetchRoleConnectionMetadataRecords(): Promise<ApplicationRoleConnectionMetadata[]>;
   public fetchSKUs(): Promise<Collection<Snowflake, SKU>>;
   public editRoleConnectionMetadataRecords(