diff --git a/event/listener.php b/event/listener.php
index 8110a8a..661c8ae 100644
--- a/event/listener.php
+++ b/event/listener.php
@@ -64,6 +64,7 @@ public static function getSubscribedEvents()
 			'core.acp_board_config_edit_add'=> 'add_googleanalytics_configs',
 			'core.validate_config_variable'	=> 'validate_googleanalytics_id',
 			'core.page_footer_after'		=> 'append_agreement',
+			'phpbb.consentmanager.collect_registrations' => 'register_analytics',
 		];
 	}
 
@@ -175,4 +176,26 @@ public function append_agreement()
 
 		$this->template->append_var('AGREEMENT_TEXT', $this->language->lang('PHPBB_ANALYTICS_PRIVACY_POLICY', $this->config['sitename']));
 	}
+
+	/**
+	 * Register Google Analytics with Consent Manager when available.
+	 *
+	 * @param \phpbb\event\data|array $event The event object or event data
+	 * @return void
+	 */
+	public function register_analytics($event)
+	{
+		if (!$this->config['googleanalytics_id'])
+		{
+			return;
+		}
+
+		$this->language->add_lang('common', 'phpbb/googleanalytics');
+
+		$event['consent_manager']->register('phpbb.googleanalytics', [
+			'label'		=> $this->language->lang('GOOGLEANALYTICS_LABEL'),
+			'category'	=> 'analytics',
+			'description' => $this->language->lang('GOOGLEANALYTICS_DESCRIPTION'),
+		]);
+	}
 }
diff --git a/language/en/common.php b/language/en/common.php
new file mode 100644
index 0000000..4c8d8c9
--- /dev/null
+++ b/language/en/common.php
@@ -0,0 +1,27 @@
+<?php
+/**
+*
+* Google Analytics extension for the phpBB Forum Software package.
+*
+* @copyright (c) 2026 phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+*/
+
+/**
+* DO NOT CHANGE
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+if (empty($lang) || !is_array($lang))
+{
+	$lang = array();
+}
+
+$lang = array_merge($lang, array(
+	'GOOGLEANALYTICS_LABEL'			=> 'Google Analytics',
+	'GOOGLEANALYTICS_DESCRIPTION'	=> 'Tracks the pages you visit, the time spent on each page, and general usage patterns.'
+));
diff --git a/styles/all/template/event/overall_header_stylesheets_after.html b/styles/all/template/event/overall_header_stylesheets_after.html
index 95c63c2..4340c83 100644
--- a/styles/all/template/event/overall_header_stylesheets_after.html
+++ b/styles/all/template/event/overall_header_stylesheets_after.html
@@ -1,12 +1,44 @@
 {% if GOOGLEANALYTICS_ID %}
+	{% if S_CONSENTMANAGER_ANALYTICS_ENABLED -%}
+	<script>
+		window.dataLayer = window.dataLayer || [];
+		window.gtag = window.gtag || function(){window.dataLayer.push(arguments);}
+
+		window.gtag('consent', 'default', {
+			'analytics_storage': 'denied'
+		});
+
+		(function(window) {
+			function updateConsent() {
+				window.gtag('consent', 'update', {
+					'analytics_storage': window.consentManager && typeof window.consentManager.hasConsent === 'function' && window.consentManager.hasConsent('analytics') ? 'granted' : 'denied'
+				});
+			}
+
+			if (window.consentManager && typeof window.consentManager.onChange === 'function') {
+				window.consentManager.onChange(updateConsent);
+			} else {
+				updateConsent();
+			}
+		})(window);
+	</script>
+	{% endif -%}
 	<!-- Google tag (gtag.js) - Google Analytics -->
 	<script async src="https://www.googletagmanager.com/gtag/js?id={{ GOOGLEANALYTICS_ID }}"></script>
 	<script>
 		window.dataLayer = window.dataLayer || [];
-		function gtag(){dataLayer.push(arguments);}
-		gtag('js', new Date());
+		window.gtag = window.gtag || function(){window.dataLayer.push(arguments);}
+
+		{% if S_CONSENTMANAGER_ANALYTICS_ENABLED -%}
+		if (window.consentManager && typeof window.consentManager.hasConsent === 'function') {
+			window.gtag('consent', 'update', {
+				'analytics_storage': window.consentManager.hasConsent('analytics') ? 'granted' : 'denied'
+			});
+		}
+		{% endif %}
 
-		gtag('config', '{{ GOOGLEANALYTICS_ID }}', {
+		window.gtag('js', new Date());
+		window.gtag('config', '{{ GOOGLEANALYTICS_ID }}', {
 			{%- EVENT phpbb_googleanalytics_gtag_options -%}
 			{%- if S_REGISTERED_USER %}'user_id': '{{ GOOGLEANALYTICS_USER_ID }}',{% endif -%}
 			{%- if S_ANONYMIZE_IP %}'anonymize_ip': true,{% endif -%}
diff --git a/tests/event/listener_test.php b/tests/event/listener_test.php
index cbc2de5..f9c19ee 100644
--- a/tests/event/listener_test.php
+++ b/tests/event/listener_test.php
@@ -92,6 +92,7 @@ public function test_getSubscribedEvents()
 			'core.acp_board_config_edit_add',
 			'core.validate_config_variable',
 			'core.page_footer_after',
+			'phpbb.consentmanager.collect_registrations',
 		], array_keys(\phpbb\googleanalytics\event\listener::getSubscribedEvents()));
 	}
 
@@ -305,4 +306,53 @@ public function test_append_agreement($googleanalytics_id, $s_agreement, $agreem
 		$this->set_listener();
 		$this->listener->append_agreement();
 	}
+
+	public function register_analytics_data()
+	{
+		return [
+			'configured analytics' => ['G-A1B2C3D4E5', 1],
+			'missing analytics id' => ['', 0],
+		];
+	}
+
+	/**
+	 * @dataProvider register_analytics_data
+	 */
+	public function test_register_analytics($googleanalytics_id, $expected_calls)
+	{
+		$this->config['googleanalytics_id'] = $googleanalytics_id;
+		$this->set_listener();
+
+		$consent_manager = new consent_manager_double();
+
+		$this->listener->register_analytics([
+			'consent_manager' => $consent_manager,
+		]);
+
+		self::assertCount($expected_calls, $consent_manager->registrations);
+
+		if ($expected_calls)
+		{
+			self::assertSame('phpbb.googleanalytics', $consent_manager->registrations[0]['id']);
+			self::assertSame([
+				'label' => $this->language->lang('GOOGLEANALYTICS_LABEL'),
+				'category' => 'analytics',
+				'description' => $this->language->lang('GOOGLEANALYTICS_DESCRIPTION'),
+			], $consent_manager->registrations[0]['definition']);
+		}
+	}
+}
+
+class consent_manager_double
+{
+	/** @var array */
+	public $registrations = [];
+
+	public function register($id, array $definition)
+	{
+		$this->registrations[] = [
+			'id' => $id,
+			'definition' => $definition,
+		];
+	}
 }
diff --git a/tests/functional/google_analytics_consentmanager_test.php b/tests/functional/google_analytics_consentmanager_test.php
new file mode 100644
index 0000000..b0d95f2
--- /dev/null
+++ b/tests/functional/google_analytics_consentmanager_test.php
@@ -0,0 +1,109 @@
+<?php
+/**
+ *
+ * Google Analytics extension for the phpBB Forum Software package.
+ *
+ * @copyright (c) 2026
+ * @license GNU General Public License, version 2 (GPL-2.0)
+ *
+ */
+
+namespace phpbb\googleanalytics\tests\functional;
+
+/**
+ * @group functional
+ */
+class google_analytics_consentmanager_test extends \phpbb_functional_test_case
+{
+	/** @var string */
+	protected $sample_ga_code = 'G-A1B2C3D4E5';
+
+	protected static function setup_extensions()
+	{
+		$extensions = ['phpbb/googleanalytics'];
+
+		if (self::is_consentmanager_available())
+		{
+			array_unshift($extensions, 'phpbb/consentmanager');
+		}
+
+		return $extensions;
+	}
+
+	public function test_consentmanager_enables_google_consent_mode()
+	{
+		if (!self::is_consentmanager_available())
+		{
+			self::markTestSkipped('Consent Manager extension is not available.');
+		}
+
+		$this->login();
+		$this->admin_login();
+		$this->add_lang('acp/board');
+		$this->add_lang_ext('phpbb/googleanalytics', 'googleanalytics_acp');
+
+		$crawler = self::request('GET', 'adm/index.php?i=acp_board&mode=settings&sid=' . $this->sid);
+		$form = $crawler->selectButton($this->lang('SUBMIT'))->form();
+		$values = $form->getValues();
+		$values['config[googleanalytics_id]'] = $this->sample_ga_code;
+		$form->setValues($values);
+		self::submit($form);
+
+		$crawler = self::request('GET', 'index.php');
+
+		self::assertSame(
+			'https://www.googletagmanager.com/gtag/js?id=' . $this->sample_ga_code,
+			$crawler->filter('head > script[src*="googletagmanager.com/gtag/js"]')->attr('src')
+		);
+
+		$head = $crawler->filter('head')->html();
+		self::assertStringContainsString("window.gtag('consent', 'default'", $head);
+		self::assertStringContainsString("'analytics_storage': 'denied'", $head);
+		self::assertStringContainsString("window.consentManager.onChange(updateConsent)", $head);
+		self::assertStringContainsString("window.consentManager.hasConsent('analytics') ? 'granted' : 'denied'", $head);
+		self::assertStringNotContainsString("'ad_storage'", $head);
+		self::assertStringNotContainsString("'ad_user_data'", $head);
+		self::assertStringNotContainsString("'ad_personalization'", $head);
+	}
+
+	public function test_google_analytics_runs_normally_when_analytics_category_is_disabled()
+	{
+		if (!self::is_consentmanager_available())
+		{
+			self::markTestSkipped('Consent Manager extension is not available.');
+		}
+
+		$this->login();
+		$this->admin_login();
+		$this->add_lang('acp/board');
+		$this->add_lang_ext('phpbb/googleanalytics', 'googleanalytics_acp');
+		$this->add_lang_ext('phpbb/consentmanager', 'acp_consentmanager');
+
+		$crawler = self::request('GET', 'adm/index.php?i=acp_board&mode=settings&sid=' . $this->sid);
+		$form = $crawler->selectButton($this->lang('SUBMIT'))->form();
+		$values = $form->getValues();
+		$values['config[googleanalytics_id]'] = $this->sample_ga_code;
+		$form->setValues($values);
+		self::submit($form);
+
+		$crawler = self::request('GET', 'adm/index.php?i=-phpbb-consentmanager-acp-consentmanager_module&mode=settings&sid=' . $this->sid);
+		$form = $crawler->selectButton($this->lang('SUBMIT'))->form();
+		$values = $form->getValues();
+		$values['consentmanager_analytics_enabled'] = '0';
+		$form->setValues($values);
+		self::submit($form);
+
+		$crawler = self::request('GET', 'index.php');
+
+		self::assertSame(
+			'https://www.googletagmanager.com/gtag/js?id=' . $this->sample_ga_code,
+			$crawler->filter('head > script[src*="googletagmanager.com/gtag/js"]')->attr('src')
+		);
+		self::assertStringNotContainsString("window.gtag('consent', 'default'", $crawler->filter('head')->html());
+	}
+
+	protected static function is_consentmanager_available()
+	{
+		return is_file(__DIR__ . '/../../../../phpbb/consentmanager/ext.php');
+	}
+}