diff --git a/examples/complete/main.tf b/examples/complete/main.tf
index 8f2ba0d..9a204a5 100644
--- a/examples/complete/main.tf
+++ b/examples/complete/main.tf
@@ -36,4 +36,17 @@ module "vpc" {
     terraform   = "True"
     environment = "dev"
   }
+
+  public_subnet_tags = {
+    Type                               = "public"
+    "kubernetes.io/role/elb"           = "1"
+    "kubernetes.io/cluster/my-cluster" = "shared"
+  }
+
+  private_subnet_tags = {
+    Type                               = "private"
+    "kubernetes.io/role/internal-elb"  = "1"
+    "kubernetes.io/cluster/my-cluster" = "shared"
+    DatabaseTier                       = "true"
+  }
 }
diff --git a/main.tf b/main.tf
index d6fa6e5..a927e20 100644
--- a/main.tf
+++ b/main.tf
@@ -95,6 +95,7 @@ resource "aws_subnet" "public" {
 
   tags = merge(
     var.tags,
+    var.public_subnet_tags,
     {
       "Name" = "${var.name_prefix}-public-subnet-${count.index + 1}"
       "Tier" = "Public"
@@ -182,6 +183,7 @@ resource "aws_subnet" "private" {
 
   tags = merge(
     var.tags,
+    var.private_subnet_tags,
     {
       "Name" = "${var.name_prefix}-private-subnet-${count.index + 1}"
       "Tier" = "Private"
diff --git a/variables.tf b/variables.tf
index 51da4fb..e2353e0 100644
--- a/variables.tf
+++ b/variables.tf
@@ -77,6 +77,18 @@ variable "tags" {
   default     = {}
 }
 
+variable "public_subnet_tags" {
+  description = "Additional tags to apply to public subnets."
+  type        = map(string)
+  default     = {}
+}
+
+variable "private_subnet_tags" {
+  description = "Additional tags to apply to private subnets."
+  type        = map(string)
+  default     = {}
+}
+
 variable "s3_endpoint_policy" {
   description = "Policy document to attach to S3 Gateway Endpoint. Defaults to blank."
   default     = null