diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 570f1d33..28b23ff7 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,3 +1,4 @@
 ### New Features
 
-Until BigCommerce decide to be consistent and include a _Get Customer_ endpoint, add `CustomersApi::getById(int $id)`.
+Implement the new (Custom Template Associations)[https://developer.bigcommerce.com/api-reference/store-management/custom-template-associations]
+API.
\ No newline at end of file
diff --git a/src/BigCommerce/Api/CustomTemplateAssociations/CustomTemplateAssociationsApi.php b/src/BigCommerce/Api/CustomTemplateAssociations/CustomTemplateAssociationsApi.php
new file mode 100644
index 00000000..fa093004
--- /dev/null
+++ b/src/BigCommerce/Api/CustomTemplateAssociations/CustomTemplateAssociationsApi.php
@@ -0,0 +1,91 @@
+<?php
+
+namespace BigCommerce\ApiV3\Api\CustomTemplateAssociations;
+
+use BigCommerce\ApiV3\Api\Generic\BatchUpdateResource;
+use BigCommerce\ApiV3\Api\Generic\GetAllResources;
+use BigCommerce\ApiV3\Api\Generic\V3ApiBase;
+use BigCommerce\ApiV3\ResourceModels\CustomTemplateAssociation\CustomTemplateAssociation;
+use BigCommerce\ApiV3\ResponseModels\CustomTemplateAssociation\CustomTemplateAssociationsResponse;
+use GuzzleHttp\RequestOptions;
+
+class CustomTemplateAssociationsApi extends V3ApiBase
+{
+    use GetAllResources;
+    use BatchUpdateResource;
+
+    private const TEMPLATES_ENDPOINT = '/storefront/custom-template-associations';
+
+    public const FILTER_CHANNEL_ID   = 'channel_id';
+    public const FILTER_ENTITY_ID_IN = 'entity_id:in';
+    public const FILTER_TYPE         = 'type';
+    public const FILTER_IS_VALID     = 'is_valid';
+
+    public const DELETE_QUERY_ID_IN         = 'id:in';
+    public const DELETE_QUERY_ENTITY_ID_IN  = 'entity_id:in';
+    public const DELETE_QUERY_CHANNEL_ID    = 'channel_id';
+    public const DELETE_QUERY_TYPE          = 'type';
+
+    protected function maxBatchSize(): int
+    {
+        return 100;
+    }
+
+    public function getAll(array $filters = [], int $page = 1, int $limit = 250): CustomTemplateAssociationsResponse
+    {
+        return new CustomTemplateAssociationsResponse($this->getAllResources($filters, $page, $limit));
+    }
+
+    /**
+     * @param CustomTemplateAssociation[] $templateAssociations
+     * @return CustomTemplateAssociationsResponse
+     */
+    public function batchUpdate(array $templateAssociations): CustomTemplateAssociationsResponse
+    {
+        return CustomTemplateAssociationsResponse::buildFromMultipleResponses(
+            $this->batchUpdateResource($templateAssociations)
+        );
+    }
+
+    public function multipleResourcesEndpoint(): string
+    {
+        return self::TEMPLATES_ENDPOINT;
+    }
+
+    public function multipleResourceUrl(): string
+    {
+        return $this->multipleResourcesEndpoint();
+    }
+
+    public function delete(array $query): void
+    {
+        $this->getClient()->getRestClient()->delete(
+            $this->multipleResourceUrl(),
+            [
+                RequestOptions::QUERY => $query
+            ]
+        );
+    }
+
+    public function deleteByIds(array $ids): void
+    {
+        $this->delete([
+            self::DELETE_QUERY_ID_IN => $ids
+        ]);
+    }
+
+    public function deleteByChannelId(int $channelId): void
+    {
+        $this->delete([
+            self::DELETE_QUERY_CHANNEL_ID => $channelId
+        ]);
+    }
+
+    public function deleteByEntityIds(string $type, array $ids): void
+    {
+        $this->delete([
+            self::DELETE_QUERY_ENTITY_ID_IN => $ids,
+            self::DELETE_QUERY_TYPE         => $type,
+        ]);
+    }
+}
diff --git a/src/BigCommerce/Api/Generic/BatchUpdateResource.php b/src/BigCommerce/Api/Generic/BatchUpdateResource.php
new file mode 100644
index 00000000..f80e2d88
--- /dev/null
+++ b/src/BigCommerce/Api/Generic/BatchUpdateResource.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace BigCommerce\ApiV3\Api\Generic;
+
+use BigCommerce\ApiV3\Client;
+use BigCommerce\ApiV3\ResponseModels\PaginatedResponse;
+use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\ResponseInterface;
+
+trait BatchUpdateResource
+{
+    abstract public function batchUpdate(array $resources): PaginatedResponse;
+    abstract public function multipleResourcesEndpoint(): string;
+    abstract public function getClient(): Client;
+
+    protected function maxBatchSize(): int
+    {
+        return 10;
+    }
+
+    /**
+     * @param array $resources
+     * @return ResponseInterface[]
+     */
+    protected function batchUpdateResource(array $resources): array
+    {
+        $chunks = array_chunk($resources, $this->maxBatchSize());
+        $responses = [];
+        foreach ($chunks as $chunk) {
+            $responses[] = $this->getClient()->getRestClient()->put(
+                $this->multipleResourcesEndpoint(),
+                [
+                    RequestOptions::JSON => $chunk,
+                ]
+            );
+        }
+
+        return $responses;
+    }
+}
diff --git a/src/BigCommerce/Api/Generic/ResourceWithBatchUpdateApi.php b/src/BigCommerce/Api/Generic/ResourceWithBatchUpdateApi.php
index 4744c877..2b9f49f6 100644
--- a/src/BigCommerce/Api/Generic/ResourceWithBatchUpdateApi.php
+++ b/src/BigCommerce/Api/Generic/ResourceWithBatchUpdateApi.php
@@ -8,28 +8,5 @@
 
 abstract class ResourceWithBatchUpdateApi extends ResourceApi
 {
-    protected const MAX_BATCH_SIZE = 10;
-
-    abstract public function batchUpdate(array $resources): PaginatedResponse;
-
-    /**
-     * @param array $resources
-     * @return ResponseInterface[]
-     * @throws \GuzzleHttp\Exception\GuzzleException
-     */
-    protected function batchUpdateResource(array $resources): array
-    {
-        $chunks = array_chunk($resources, self::MAX_BATCH_SIZE);
-        $responses = [];
-        foreach ($chunks as $chunk) {
-            $responses[] = $this->getClient()->getRestClient()->put(
-                $this->multipleResourcesEndpoint(),
-                [
-                    RequestOptions::JSON => $chunk,
-                ]
-            );
-        }
-
-        return $responses;
-    }
+    use BatchUpdateResource;
 }
diff --git a/src/BigCommerce/Client.php b/src/BigCommerce/Client.php
index b39aa656..4e3d4659 100644
--- a/src/BigCommerce/Client.php
+++ b/src/BigCommerce/Client.php
@@ -10,6 +10,7 @@
 use BigCommerce\ApiV3\Api\Scripts\ScriptsApi;
 use BigCommerce\ApiV3\Api\Themes\ThemesApi;
 use BigCommerce\ApiV3\Api\Widgets\WidgetsApi;
+use BigCommerce\ApiV3\Api\CustomTemplateAssociations\CustomTemplateAssociationsApi;
 use GuzzleHttp\HandlerStack;
 use GuzzleHttp\Middleware;
 
@@ -159,4 +160,9 @@ public function content(): WidgetsApi
     {
         return $this->widgets();
     }
+
+    public function customTemplateAssociations(): CustomTemplateAssociationsApi
+    {
+        return new CustomTemplateAssociationsApi($this);
+    }
 }
diff --git a/src/BigCommerce/ResourceModels/CustomTemplateAssociation/CustomTemplateAssociation.php b/src/BigCommerce/ResourceModels/CustomTemplateAssociation/CustomTemplateAssociation.php
new file mode 100644
index 00000000..733e0eaf
--- /dev/null
+++ b/src/BigCommerce/ResourceModels/CustomTemplateAssociation/CustomTemplateAssociation.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace BigCommerce\ApiV3\ResourceModels\CustomTemplateAssociation;
+
+use BigCommerce\ApiV3\ResourceModels\ResourceModel;
+
+class CustomTemplateAssociation extends ResourceModel
+{
+    public const TYPE_PRODUCT   = 'product';
+    public const TYPE_CATEGORY  = 'category';
+    public const TYPE_BRAND     = 'brand';
+    public const TYPE_PAGE      = 'page';
+
+    public int $id;
+    public int $channel_id;
+    public string $entity_type;
+    public int $entity_id;
+    public string $file_name;
+    public ?bool $is_valid;
+    public string $date_created;
+    public string $date_modified;
+}
diff --git a/src/BigCommerce/ResponseModels/CustomTemplateAssociation/CustomTemplateAssociationsResponse.php b/src/BigCommerce/ResponseModels/CustomTemplateAssociation/CustomTemplateAssociationsResponse.php
new file mode 100644
index 00000000..e702c0a7
--- /dev/null
+++ b/src/BigCommerce/ResponseModels/CustomTemplateAssociation/CustomTemplateAssociationsResponse.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace BigCommerce\ApiV3\ResponseModels\CustomTemplateAssociation;
+
+use BigCommerce\ApiV3\ResponseModels\PaginatedBatchableResponse;
+use BigCommerce\ApiV3\ResourceModels\CustomTemplateAssociation\CustomTemplateAssociation;
+
+class CustomTemplateAssociationsResponse extends PaginatedBatchableResponse
+{
+    /**
+     * @return CustomTemplateAssociation[]
+     */
+    public function getCustomTemplateAssociations(): array
+    {
+        return $this->getData();
+    }
+
+    protected function resourceClass(): string
+    {
+        return CustomTemplateAssociation::class;
+    }
+}
diff --git a/src/BigCommerce/ResponseModels/Customer/SubscribersResponse.php b/src/BigCommerce/ResponseModels/Customer/SubscribersResponse.php
index 06bcf3c3..c9922217 100644
--- a/src/BigCommerce/ResponseModels/Customer/SubscribersResponse.php
+++ b/src/BigCommerce/ResponseModels/Customer/SubscribersResponse.php
@@ -14,6 +14,7 @@ public function getSubscribers(): array
     {
         return $this->getData();
     }
+
     protected function resourceClass(): string
     {
         return Subscriber::class;
diff --git a/tests/BigCommerce/Api/CustomTemplateAssociations/CustomTemplateAssociationsApiTest.php b/tests/BigCommerce/Api/CustomTemplateAssociations/CustomTemplateAssociationsApiTest.php
new file mode 100644
index 00000000..264ce1f1
--- /dev/null
+++ b/tests/BigCommerce/Api/CustomTemplateAssociations/CustomTemplateAssociationsApiTest.php
@@ -0,0 +1,58 @@
+<?php
+
+namespace BigCommerce\Tests\Api\CustomTemplateAssociation;
+
+use BigCommerce\ApiV3\Api\CustomTemplateAssociations\CustomTemplateAssociationsApi;
+use BigCommerce\ApiV3\ResourceModels\CustomTemplateAssociation\CustomTemplateAssociation;
+use BigCommerce\Tests\BigCommerceApiTest;
+
+class CustomTemplateAssociationsApiTest extends BigCommerceApiTest
+{
+    public function testCanGetAssociations()
+    {
+        $this->setReturnData('templates__get_all.json');
+
+        $response = $this->getApi()->customTemplateAssociations()->getAll();
+        $this->assertEquals(5, $response->getPagination()->count);
+        $this->assertEquals('custom-product-1.html', $response->getCustomTemplateAssociations()[0]->file_name);
+    }
+
+    public function testCanDeleteAssociation()
+    {
+        $this->setReturnData(self::EMPTY_RESPONSE, 204);
+
+        $customTemplateAssocApi = $this->getApi()->customTemplateAssociations();
+        $customTemplateAssocApi->deleteByChannelId(1);
+        $this->setReturnData(self::EMPTY_RESPONSE, 204);
+        $customTemplateAssocApi->deleteByIds([1, 2, 3]);
+        $this->setReturnData(self::EMPTY_RESPONSE, 204);
+        $customTemplateAssocApi->deleteByEntityIds(CustomTemplateAssociation::TYPE_CATEGORY, [4, 5, 6]);
+        $this->assertTrue(true);
+    }
+
+    public function testCanUpsertAssociation()
+    {
+        $this->setReturnData('templates__get_all.json');
+        $templateAssociationOne = new CustomTemplateAssociation((object)[
+            "id"            => 1,
+            "channel_id"    => 1,
+            "entity_type"   => "product",
+            "entity_id"     => 123,
+            "file_name"     => "custom-product-1.html",
+        ]);
+
+        $templateAssociationTwo = new CustomTemplateAssociation((object)[
+            "id" => 2,
+            "channel_id" => 12345,
+            "entity_type" => "page",
+            "entity_id" => 123,
+            "file_name" => "custom-page.html",
+        ]);
+
+        $this->getApi()->customTemplateAssociations()->batchUpdate([
+            $templateAssociationOne, $templateAssociationTwo
+        ]);
+
+        $this->assertTrue(true);
+    }
+}
diff --git a/tests/BigCommerce/responses/templates__get_all.json b/tests/BigCommerce/responses/templates__get_all.json
new file mode 100644
index 00000000..558b66cc
--- /dev/null
+++ b/tests/BigCommerce/responses/templates__get_all.json
@@ -0,0 +1,31 @@
+{
+  "data": [
+    {
+      "id": 1,
+      "channel_id": 1,
+      "entity_type": "product",
+      "entity_id": 123,
+      "file_name": "custom-product-1.html"
+    },
+    {
+      "id": 2,
+      "channel_id": 12345,
+      "entity_type": "page",
+      "entity_id": 123,
+      "file_name": "custom-page.html"
+    }
+  ],
+  "meta": {
+    "pagination": {
+      "total": 246,
+      "count": 5,
+      "per_page": 5,
+      "current_page": 1,
+      "total_pages": 50,
+      "links": {
+        "next": "?limit=5&page=2",
+        "current": "?limit=5&page=1"
+      }
+    }
+  }
+}