diff --git a/packages/block-library/src/navigation-submenu/index.php b/packages/block-library/src/navigation-submenu/index.php
index c0fdbfa271cfa4..60485079897cae 100644
--- a/packages/block-library/src/navigation-submenu/index.php
+++ b/packages/block-library/src/navigation-submenu/index.php
@@ -188,6 +188,12 @@ function render_block_core_navigation_submenu( $attributes, $content, $block ) {
 		);
 	}
 
+	$aria_label = sprintf(
+		/* translators: Accessibility text. %s: Parent page title. */
+		__( '%s submenu' ),
+		$label
+	);
+
 	$html = '<li ' . $wrapper_attributes . '>';
 
 	// If Submenus open on hover, we render an anchor tag with attributes.
@@ -226,11 +232,11 @@ function render_block_core_navigation_submenu( $attributes, $content, $block ) {
 		if ( $show_submenu_indicators ) {
 			// The submenu icon is rendered in a button here
 			// so that there's a clickable elment to open the submenu.
-			$html .= '<button aria-label="' . $label . ' ' . __( 'submenu', 'gutenberg' ) . '" class="wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle" aria-expanded="false">' . block_core_navigation_submenu_render_submenu_icon() . '</button>';
+			$html .= '<button aria-label="' . $aria_label . '" class="wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle" aria-expanded="false">' . block_core_navigation_submenu_render_submenu_icon() . '</button>';
 		}
 	} else {
 		// If menus open on click, we render the parent as a button.
-		$html .= '<button aria-label="' . $label . ' ' . __( 'submenu', 'gutenberg' ) . '" class="wp-block-navigation-item__content wp-block-navigation-submenu__toggle" aria-expanded="false">';
+		$html .= '<button aria-label="' . $aria_label . '" class="wp-block-navigation-item__content wp-block-navigation-submenu__toggle" aria-expanded="false">';
 
 		// Wrap title with span to isolate it from submenu icon.
 		$html .= '<span class="wp-block-navigation-item__label">';
diff --git a/packages/block-library/src/page-list/index.php b/packages/block-library/src/page-list/index.php
index a001966dd0c34d..0d5728c9941804 100644
--- a/packages/block-library/src/page-list/index.php
+++ b/packages/block-library/src/page-list/index.php
@@ -173,12 +173,17 @@ function block_core_page_list_render_nested_page_list( $open_submenus_on_click,
 			}
 		}
 
-		$title = wp_kses( $page['title'], wp_kses_allowed_html( 'post' ) );
+		$title      = wp_kses( $page['title'], wp_kses_allowed_html( 'post' ) );
+		$aria_label = sprintf(
+			/* translators: Accessibility text. %s: Parent page title. */
+			__( '%s submenu' ),
+			$title
+		);
 
 		$markup .= '<li class="wp-block-pages-list__item' . $css_class . '"' . $style_attribute . '>';
 
 		if ( isset( $page['children'] ) && $is_navigation_child && $open_submenus_on_click ) {
-			$markup .= '<button aria-label="' . $title . ' ' . __( 'submenu', 'gutenberg' ) . '" class="' . $navigation_child_content_class . ' wp-block-navigation-submenu__toggle" aria-expanded="false">' . $title . '<span class="wp-block-page-list__submenu-icon wp-block-navigation__submenu-icon"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12" fill="none" role="img" aria-hidden="true" focusable="false"><path d="M1.50002 4L6.00002 8L10.5 4" stroke-width="1.5"></path></svg></span>' .
+			$markup .= '<button aria-label="' . $aria_label . '" class="' . $navigation_child_content_class . ' wp-block-navigation-submenu__toggle" aria-expanded="false">' . $title . '<span class="wp-block-page-list__submenu-icon wp-block-navigation__submenu-icon"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12" fill="none" role="img" aria-hidden="true" focusable="false"><path d="M1.50002 4L6.00002 8L10.5 4" stroke-width="1.5"></path></svg></span>' .
 			'</button>';
 		} else {
 			$markup .= '<a class="wp-block-pages-list__item__link' . $navigation_child_content_class . '" href="' . esc_url( $page['link'] ) . '"' . $aria_current . '>' . $title . '</a>';
@@ -186,7 +191,7 @@ function block_core_page_list_render_nested_page_list( $open_submenus_on_click,
 
 		if ( isset( $page['children'] ) ) {
 			if ( $is_navigation_child && $show_submenu_icons && ! $open_submenus_on_click ) {
-				$markup .= '<button aria-label="' . $title . ' ' . __( 'submenu', 'gutenberg' ) . '" class="wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle" aria-expanded="false">';
+				$markup .= '<button aria-label="' . $aria_label . '" class="wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle" aria-expanded="false">';
 				$markup .= '<span class="wp-block-page-list__submenu-icon wp-block-navigation__submenu-icon"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12" fill="none" role="img" aria-hidden="true" focusable="false"><path d="M1.50002 4L6.00002 8L10.5 4" stroke-width="1.5"></path></svg></span>';
 				$markup .= '</button>';
 			}