diff --git a/changelog/add-use-site-logo-when-no-woopay-logo-defined b/changelog/add-use-site-logo-when-no-woopay-logo-defined
new file mode 100644
index 00000000000..0afbfccf655
--- /dev/null
+++ b/changelog/add-use-site-logo-when-no-woopay-logo-defined
@@ -0,0 +1,4 @@
+Significance: patch
+Type: add
+
+Fall back to site logo when a custom WooPay logo has not been defined
diff --git a/includes/woopay/class-woopay-session.php b/includes/woopay/class-woopay-session.php
index c36489f4047..2caf2be5d9e 100644
--- a/includes/woopay/class-woopay-session.php
+++ b/includes/woopay/class-woopay-session.php
@@ -340,7 +340,14 @@ private static function get_init_session_request() {
 
 		$account_id = WC_Payments::get_account_service()->get_stripe_account_id();
 
-		$store_logo = WC_Payments::get_gateway()->get_option( 'platform_checkout_store_logo' );
+		$site_logo_id      = get_theme_mod( 'custom_logo' );
+		$site_logo_url     = $site_logo_id ? ( wp_get_attachment_image_src( $site_logo_id, 'full' )[0] ?? '' ) : '';
+		$woopay_store_logo = WC_Payments::get_gateway()->get_option( 'platform_checkout_store_logo' );
+
+		$store_logo = $site_logo_url;
+		if ( ! empty( $woopay_store_logo ) ) {
+			$store_logo = get_rest_url( null, 'wc/v3/payments/file/' . $woopay_store_logo );
+		}
 
 		include_once WCPAY_ABSPATH . 'includes/compat/blocks/class-blocks-data-extractor.php';
 		$blocks_data_extractor = new Blocks_Data_Extractor();
@@ -361,7 +368,7 @@ private static function get_init_session_request() {
 			'email'                => '',
 			'store_data'           => [
 				'store_name'                     => get_bloginfo( 'name' ),
-				'store_logo'                     => ! empty( $store_logo ) ? get_rest_url( null, 'wc/v3/payments/file/' . $store_logo ) : '',
+				'store_logo'                     => $store_logo,
 				'custom_message'                 => self::get_formatted_custom_message(),
 				'blog_id'                        => Jetpack_Options::get_option( 'id' ),
 				'blog_url'                       => get_site_url(),