diff --git a/plugins/woocommerce/changelog/enhance-34244-data-source-poller-for-i18n b/plugins/woocommerce/changelog/enhance-34244-data-source-poller-for-i18n
new file mode 100644
index 00000000000..a2f0b02a1c2
--- /dev/null
+++ b/plugins/woocommerce/changelog/enhance-34244-data-source-poller-for-i18n
@@ -0,0 +1,4 @@
+Significance: patch
+Type: enhancement
+
+Add i18n support for data source poller
diff --git a/plugins/woocommerce/src/Admin/DataSourcePoller.php b/plugins/woocommerce/src/Admin/DataSourcePoller.php
index cbd1aa173c0..8b75fab911e 100644
--- a/plugins/woocommerce/src/Admin/DataSourcePoller.php
+++ b/plugins/woocommerce/src/Admin/DataSourcePoller.php
@@ -104,14 +104,17 @@ abstract class DataSourcePoller {
 	 * @return array list of specs.
 	 */
 	public function get_specs_from_data_sources() {
-		$specs = get_transient( $this->args['transient_name'] );
+		$locale      = get_user_locale();
+		$specs_group = get_transient( $this->args['transient_name'] ) ?? array();
+		$specs       = isset( $specs_group[ $locale ] ) ? $specs_group[ $locale ] : array();
 
-		if ( false === $specs || ! is_array( $specs ) || 0 === count( $specs ) ) {
+		if ( ! is_array( $specs ) || empty( $specs ) ) {
 			$this->read_specs_from_data_sources();
-			$specs = get_transient( $this->args['transient_name'] );
+			$specs_group = get_transient( $this->args['transient_name'] );
+			$specs       = isset( $specs_group[ $locale ] ) ? $specs_group[ $locale ] : array();
 		}
 		$specs = apply_filters( self::FILTER_NAME_SPECS, $specs, $this->id );
-		return false !== $specs ? $specs : array();
+		return $specs !== false ? $specs : array();
 	}
 
 	/**
@@ -130,14 +133,16 @@ abstract class DataSourcePoller {
 			$this->merge_specs( $specs_from_data_source, $specs, $url );
 		}
 
+		$specs_group            = get_transient( $this->args['transient_name'] ) ?? array();
+		$locale                 = get_user_locale();
+		$specs_group[ $locale ] = $specs;
 		// Persist the specs as a transient.
 		set_transient(
 			$this->args['transient_name'],
-			$specs,
+			$specs_group,
 			$this->args['transient_expiry']
 		);
-
-		return 0 !== count( $specs );
+		return count( $specs ) !== 0;
 	}
 
 	/**
@@ -161,7 +166,7 @@ abstract class DataSourcePoller {
 		$logger         = self::get_logger();
 		$response       = wp_remote_get(
 			add_query_arg(
-				'_locale',
+				'locale',
 				get_user_locale(),
 				$url
 			)
@@ -181,7 +186,7 @@ abstract class DataSourcePoller {
 		$body  = $response['body'];
 		$specs = json_decode( $body );
 
-		if ( null === $specs ) {
+		if ( $specs === null ) {
 			$logger->error(
 				'Empty response in data feed',
 				$logger_context
diff --git a/plugins/woocommerce/src/Admin/Features/PaymentGatewaySuggestions/Init.php b/plugins/woocommerce/src/Admin/Features/PaymentGatewaySuggestions/Init.php
index 48b748cf334..926543b05ad 100644
--- a/plugins/woocommerce/src/Admin/Features/PaymentGatewaySuggestions/Init.php
+++ b/plugins/woocommerce/src/Admin/Features/PaymentGatewaySuggestions/Init.php
@@ -7,7 +7,6 @@ namespace Automattic\WooCommerce\Admin\Features\PaymentGatewaySuggestions;
 
 defined( 'ABSPATH' ) || exit;
 
-use Automattic\WooCommerce\Admin\RemoteInboxNotifications\SpecRunner;
 use Automattic\WooCommerce\Admin\Features\PaymentGatewaySuggestions\DefaultPaymentGateways;
 use Automattic\WooCommerce\Admin\Features\PaymentGatewaySuggestions\PaymentGatewaysController;
 
@@ -25,7 +24,6 @@ class Init {
 	 * Constructor.
 	 */
 	public function __construct() {
-		add_action( 'change_locale', array( __CLASS__, 'delete_specs_transient' ) );
 		PaymentGatewaysController::init();
 	}
 
diff --git a/plugins/woocommerce/src/Internal/Admin/RemoteFreeExtensions/Init.php b/plugins/woocommerce/src/Internal/Admin/RemoteFreeExtensions/Init.php
index 12a28bdec7b..2baad0a2995 100644
--- a/plugins/woocommerce/src/Internal/Admin/RemoteFreeExtensions/Init.php
+++ b/plugins/woocommerce/src/Internal/Admin/RemoteFreeExtensions/Init.php
@@ -19,7 +19,6 @@ class Init {
 	 * Constructor.
 	 */
 	public function __construct() {
-		add_action( 'change_locale', array( __CLASS__, 'delete_specs_transient' ) );
 		add_action( 'woocommerce_updated', array( __CLASS__, 'delete_specs_transient' ) );
 	}
 
diff --git a/plugins/woocommerce/src/Internal/Admin/WCPayPromotion/Init.php b/plugins/woocommerce/src/Internal/Admin/WCPayPromotion/Init.php
index fc1bc10da38..b0e6873f70d 100644
--- a/plugins/woocommerce/src/Internal/Admin/WCPayPromotion/Init.php
+++ b/plugins/woocommerce/src/Internal/Admin/WCPayPromotion/Init.php
@@ -24,8 +24,6 @@ class Init {
 	public function __construct() {
 		include_once __DIR__ . '/WCPaymentGatewayPreInstallWCPayPromotion.php';
 
-		add_action( 'change_locale', array( __CLASS__, 'delete_specs_transient' ) );
-
 		$is_payments_page = isset( $_GET['page'] ) && 'wc-settings' === $_GET['page'] && isset( $_GET['tab'] ) && 'checkout' === $_GET['tab']; // phpcs:ignore WordPress.Security.NonceVerification
 		if ( ! wp_is_json_request() && ! $is_payments_page ) {
 			return;
diff --git a/plugins/woocommerce/tests/legacy/unit-tests/woocommerce-admin/features/payment-gateway-suggestions/data-source-poller.php b/plugins/woocommerce/tests/legacy/unit-tests/woocommerce-admin/features/payment-gateway-suggestions/data-source-poller.php
index 1fbdf74d0e0..80a6a74d37e 100644
--- a/plugins/woocommerce/tests/legacy/unit-tests/woocommerce-admin/features/payment-gateway-suggestions/data-source-poller.php
+++ b/plugins/woocommerce/tests/legacy/unit-tests/woocommerce-admin/features/payment-gateway-suggestions/data-source-poller.php
@@ -5,7 +5,6 @@
  * @package WooCommerce\Admin\Tests\PaymentGatewaySuggestions
  */
 
-use Automattic\WooCommerce\Admin\Features\PaymentGatewaySuggestions\Init as PaymentGatewaySuggestions;
 use Automattic\WooCommerce\Admin\DataSourcePoller;
 use Automattic\WooCommerce\Admin\Features\PaymentGatewaySuggestions\PaymentGatewaySuggestionsDataSourcePoller;
 
@@ -33,7 +32,7 @@ class WC_Admin_Tests_PaymentGatewaySuggestions_DataSourcePoller extends WC_Unit_
 			function( $pre, $parsed_args, $url ) {
 				$locale = get_locale();
 
-				if ( 'payment-gateway-suggestions-data-source.json?_locale=' . $locale === $url ) {
+				if ( $url === 'payment-gateway-suggestions-data-source.json?locale=' . $locale ) {
 					return array(
 						'body' => wp_json_encode(
 							array(
@@ -51,7 +50,7 @@ class WC_Admin_Tests_PaymentGatewaySuggestions_DataSourcePoller extends WC_Unit_
 					);
 				}
 
-				if ( 'payment-gateway-suggestions-data-source2.json?_locale=' . $locale === $url ) {
+				if ( $url === 'payment-gateway-suggestions-data-source2.json?locale=' . $locale ) {
 					return array(
 						'body' => wp_json_encode(
 							array(
@@ -161,7 +160,12 @@ class WC_Admin_Tests_PaymentGatewaySuggestions_DataSourcePoller extends WC_Unit_
 		$data               = $data_source_poller->get_specs_from_data_sources();
 		$this->assertCount( 2, $data );
 
-		$data = get_transient( 'woocommerce_admin_' . PaymentGatewaySuggestionsDataSourcePoller::ID . '_specs' );
+		$data   = get_transient( 'woocommerce_admin_' . PaymentGatewaySuggestionsDataSourcePoller::ID . '_specs' );
+		$locale = get_locale();
+		$this->assertArrayHasKey( $locale, $data );
+
+		$data = $data[ $locale ];
 		$this->assertCount( 2, $data );
+
 	}
 }
diff --git a/plugins/woocommerce/tests/legacy/unit-tests/woocommerce-admin/features/payment-gateway-suggestions/payment-gateway-suggestions.php b/plugins/woocommerce/tests/legacy/unit-tests/woocommerce-admin/features/payment-gateway-suggestions/payment-gateway-suggestions.php
index 15e6fe1be2c..98e7491890b 100644
--- a/plugins/woocommerce/tests/legacy/unit-tests/woocommerce-admin/features/payment-gateway-suggestions/payment-gateway-suggestions.php
+++ b/plugins/woocommerce/tests/legacy/unit-tests/woocommerce-admin/features/payment-gateway-suggestions/payment-gateway-suggestions.php
@@ -52,12 +52,14 @@ class WC_Admin_Tests_PaymentGatewaySuggestions_Init extends WC_Unit_Test_Case {
 	 */
 	public function get_mock_specs() {
 		return array(
-			array(
-				'id'         => 'mock-gateway',
-				'is_visible' => (object) array(
-					'type'      => 'base_location_country',
-					'value'     => 'ZA',
-					'operation' => '=',
+			'en_US' => array(
+				array(
+					'id'         => 'mock-gateway',
+					'is_visible' => (object) array(
+						'type'      => 'base_location_country',
+						'value'     => 'ZA',
+						'operation' => '=',
+					),
 				),
 			),
 		);
@@ -87,11 +89,13 @@ class WC_Admin_Tests_PaymentGatewaySuggestions_Init extends WC_Unit_Test_Case {
 		set_transient(
 			'woocommerce_admin_' . PaymentGatewaySuggestionsDataSourcePoller::ID . '_specs',
 			array(
-				array(
-					'id' => 'mock-gateway1',
-				),
-				array(
-					'id' => 'mock-gateway2',
+				'en_US' => array(
+					array(
+						'id' => 'mock-gateway1',
+					),
+					array(
+						'id' => 'mock-gateway2',
+					),
 				),
 			)
 		);
@@ -126,33 +130,33 @@ class WC_Admin_Tests_PaymentGatewaySuggestions_Init extends WC_Unit_Test_Case {
 	}
 
 	/**
-	 * Test that the transient is deleted on locale change.
+	 * Test that matched locale specs are read from cache.
 	 */
-	public function test_delete_transient_on_locale_change() {
+	public function test_specs_locale_transient() {
 		set_transient(
 			'woocommerce_admin_' . PaymentGatewaySuggestionsDataSourcePoller::ID . '_specs',
 			array(
-				array(
-					'id' => 'mock-gateway',
+				'en_US' => array(
+					array(
+						'id' => 'mock-gateway',
+					),
+				),
+				'zh_TW' => array(
+					array(
+						'id' => 'default-gateway',
+					),
 				),
 			)
 		);
 
 		add_filter(
-			'get_available_languages',
-			function( $languages ) {
-				$languages[] = 'zh_TW';
-				return $languages;
+			'locale',
+			function( $_locale ) {
+				return 'zh_TW';
 			}
 		);
 
-		$wp_locale_switcher = new WP_Locale_switcher();
-		$wp_locale_switcher->switch_to_locale( 'zh_TW' );
-
 		$suggestions = PaymentGatewaySuggestions::get_suggestions();
-
-		$wp_locale_switcher->switch_to_locale( 'en_US' );
-
 		$this->assertEquals( 'default-gateway', $suggestions[0]->id );
 	}