diff --git a/src/ConvertKit_API.php b/src/ConvertKit_API.php
index 9c7e861..83c2a94 100644
--- a/src/ConvertKit_API.php
+++ b/src/ConvertKit_API.php
@@ -150,6 +150,35 @@ public function get_account()
         );
     }
 
+    /**
+     * List subscriptions to a form
+     *
+     * @param integer $form_id          Form ID.
+     * @param string  $sort_order       Sort Order (asc|desc).
+     * @param string  $subscriber_state Subscriber State (active,cancelled).
+     * @param integer $page             Page.
+     *
+     * @see https://developers.convertkit.com/#list-subscriptions-to-a-form
+     *
+     * @return false|mixed
+     */
+    public function get_form_subscriptions(
+        int $form_id,
+        string $sort_order = 'asc',
+        string $subscriber_state = 'active',
+        int $page = 1
+    ) {
+        return $this->get(
+            sprintf('forms/%s/subscriptions', $form_id),
+            [
+                'api_secret'       => $this->api_secret,
+                'sort_order'       => $sort_order,
+                'subscriber_state' => $subscriber_state,
+                'page'             => $page,
+            ]
+        );
+    }
+
     /**
      * Gets all sequences
      *
diff --git a/tests/ConvertKitAPITest.php b/tests/ConvertKitAPITest.php
index 398bb42..51f25fd 100644
--- a/tests/ConvertKitAPITest.php
+++ b/tests/ConvertKitAPITest.php
@@ -65,6 +65,119 @@ public function testGetAccount()
         $this->assertArrayHasKey('primary_email_address', $result);
     }
 
+    /**
+     * Test that get_form_subscriptions() returns the expected data
+     * when a valid Form ID is specified.
+     *
+     * @since   1.0.0
+     *
+     * @return void
+     */
+    public function testGetFormSubscriptions()
+    {
+        $result = $this->api->get_form_subscriptions((int) $_ENV['CONVERTKIT_API_FORM_ID']);
+
+        // Convert to array to check for keys, as assertObjectHasAttribute() will be deprecated in PHPUnit 10.
+        $result = get_object_vars($result);
+        $this->assertArrayHasKey('total_subscriptions', $result);
+        $this->assertArrayHasKey('page', $result);
+        $this->assertArrayHasKey('total_pages', $result);
+        $this->assertArrayHasKey('subscriptions', $result);
+        $this->assertIsArray($result['subscriptions']);
+
+        // Assert sort order is ascending.
+        $this->assertGreaterThanOrEqual(
+            $result['subscriptions'][0]->created_at,
+            $result['subscriptions'][1]->created_at
+        );
+    }
+
+    /**
+     * Test that get_form_subscriptions() returns the expected data
+     * when a valid Form ID is specified and the sort order is descending.
+     *
+     * @since   1.0.0
+     *
+     * @return void
+     */
+    public function testGetFormSubscriptionsWithDescSortOrder()
+    {
+        $result = $this->api->get_form_subscriptions((int) $_ENV['CONVERTKIT_API_FORM_ID'], 'desc');
+
+        // Convert to array to check for keys, as assertObjectHasAttribute() will be deprecated in PHPUnit 10.
+        $result = get_object_vars($result);
+        $this->assertArrayHasKey('total_subscriptions', $result);
+        $this->assertArrayHasKey('page', $result);
+        $this->assertArrayHasKey('total_pages', $result);
+        $this->assertArrayHasKey('subscriptions', $result);
+        $this->assertIsArray($result['subscriptions']);
+
+        // Assert sort order.
+        $this->assertLessThanOrEqual(
+            $result['subscriptions'][0]->created_at,
+            $result['subscriptions'][1]->created_at
+        );
+    }
+
+    /**
+     * Test that get_form_subscriptions() returns the expected data
+     * when a valid Form ID is specified and the subscription status
+     * is cancelled.
+     *
+     * @since   1.0.0
+     *
+     * @return void
+     */
+    public function testGetFormSubscriptionsWithCancelledSubscriberState()
+    {
+        $result = $this->api->get_form_subscriptions((int) $_ENV['CONVERTKIT_API_FORM_ID'], 'asc', 'cancelled');
+
+        // Convert to array to check for keys, as assertObjectHasAttribute() will be deprecated in PHPUnit 10.
+        $result = get_object_vars($result);
+        $this->assertArrayHasKey('total_subscriptions', $result);
+        $this->assertEquals($result['total_subscriptions'], 0);
+        $this->assertArrayHasKey('page', $result);
+        $this->assertArrayHasKey('total_pages', $result);
+        $this->assertArrayHasKey('subscriptions', $result);
+        $this->assertIsArray($result['subscriptions']);
+    }
+
+    /**
+     * Test that get_form_subscriptions() returns the expected data
+     * when a valid Form ID is specified and the page is set to 2.
+     *
+     * @since   1.0.0
+     *
+     * @return void
+     */
+    public function testGetFormSubscriptionsWithPage()
+    {
+        $result = $this->api->get_form_subscriptions((int) $_ENV['CONVERTKIT_API_FORM_ID'], 'asc', 'active', 2);
+
+        // Convert to array to check for keys, as assertObjectHasAttribute() will be deprecated in PHPUnit 10.
+        $result = get_object_vars($result);
+        $this->assertArrayHasKey('total_subscriptions', $result);
+        $this->assertArrayHasKey('page', $result);
+        $this->assertEquals($result['page'], 2);
+        $this->assertArrayHasKey('total_pages', $result);
+        $this->assertArrayHasKey('subscriptions', $result);
+        $this->assertIsArray($result['subscriptions']);
+    }
+
+    /**
+     * Test that get_form_subscriptions() returns the expected data
+     * when a valid Form ID is specified.
+     *
+     * @since   1.0.0
+     *
+     * @return void
+     */
+    public function testGetFormSubscriptionsWithInvalidFormID()
+    {
+        $this->expectException(GuzzleHttp\Exception\ClientException::class);
+        $result = $this->api->get_form_subscriptions(12345);
+    }
+
     /**
      * Test that get_sequences() returns the expected data.
      *