diff --git a/src/wp-includes/block-supports/typography.php b/src/wp-includes/block-supports/typography.php
index b31464c12d547..f1a69572a0f6c 100644
--- a/src/wp-includes/block-supports/typography.php
+++ b/src/wp-includes/block-supports/typography.php
@@ -34,6 +34,7 @@ function wp_register_typography_support( $block_type ) {
 	$has_text_columns_support    = _wp_array_get( $typography_supports, array( 'textColumns' ), false );
 	$has_text_decoration_support = _wp_array_get( $typography_supports, array( '__experimentalTextDecoration' ), false );
 	$has_text_transform_support  = _wp_array_get( $typography_supports, array( '__experimentalTextTransform' ), false );
+	$has_writing_mode_support    = _wp_array_get( $typography_supports, array( '__experimentalWritingMode' ), false );
 
 	$has_typography_support = $has_font_family_support
 		|| $has_font_size_support
@@ -43,7 +44,8 @@ function wp_register_typography_support( $block_type ) {
 		|| $has_line_height_support
 		|| $has_text_columns_support
 		|| $has_text_decoration_support
-		|| $has_text_transform_support;
+		|| $has_text_transform_support
+		|| $has_writing_mode_support;
 
 	if ( ! $block_type->attributes ) {
 		$block_type->attributes = array();
@@ -105,6 +107,7 @@ function wp_apply_typography_support( $block_type, $block_attributes ) {
 	$has_text_columns_support    = _wp_array_get( $typography_supports, array( 'textColumns' ), false );
 	$has_text_decoration_support = _wp_array_get( $typography_supports, array( '__experimentalTextDecoration' ), false );
 	$has_text_transform_support  = _wp_array_get( $typography_supports, array( '__experimentalTextTransform' ), false );
+	$has_writing_mode_support    = _wp_array_get( $typography_supports, array( '__experimentalWritingMode' ), false );
 
 	// Whether to skip individual block support features.
 	$should_skip_font_size       = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontSize' );
@@ -116,6 +119,7 @@ function wp_apply_typography_support( $block_type, $block_attributes ) {
 	$should_skip_text_decoration = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textDecoration' );
 	$should_skip_text_transform  = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textTransform' );
 	$should_skip_letter_spacing  = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'letterSpacing' );
+	$should_skip_writing_mode    = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'writingMode' );
 
 	$typography_block_styles = array();
 	if ( $has_font_size_support && ! $should_skip_font_size ) {
@@ -205,6 +209,17 @@ function wp_apply_typography_support( $block_type, $block_attributes ) {
 		);
 	}
 
+	if ( $has_writing_mode_support &&
+		! $should_skip_writing_mode &&
+		isset( $block_attributes['style']['typography']['writingMode'] )
+	) {
+		$typography_block_styles['writingMode'] = _wp_array_get(
+			$block_attributes,
+			array( 'style', 'typography', 'writingMode' ),
+			null
+		);
+	}
+
 	$attributes = array();
 	$styles     = wp_style_engine_get_styles(
 		array( 'typography' => $typography_block_styles ),
diff --git a/src/wp-includes/class-wp-theme-json.php b/src/wp-includes/class-wp-theme-json.php
index 95cbac23c3322..14a2d80408bf1 100644
--- a/src/wp-includes/class-wp-theme-json.php
+++ b/src/wp-includes/class-wp-theme-json.php
@@ -203,6 +203,7 @@ class WP_Theme_JSON {
 	 *              removed the `--wp--style--block-gap` property.
 	 * @since 6.2.0 Added `outline-*`, and `min-height` properties.
 	 * @since 6.3.0 Added `column-count` property.
+	 * @since 6.4.0 Added `writing-mode` property.
 	 *
 	 * @var array
 	 */
@@ -261,6 +262,7 @@ class WP_Theme_JSON {
 		'text-transform'                    => array( 'typography', 'textTransform' ),
 		'filter'                            => array( 'filter', 'duotone' ),
 		'box-shadow'                        => array( 'shadow' ),
+		'writing-mode'                      => array( 'typography', 'writingMode' ),
 	);
 
 	/**
@@ -340,7 +342,7 @@ class WP_Theme_JSON {
 	 * @since 6.2.0 Added `dimensions.minHeight`, 'shadow.presets', 'shadow.defaultPresets',
 	 *              `position.fixed` and `position.sticky`.
 	 * @since 6.3.0 Added support for `typography.textColumns`, removed `layout.definitions`.
-	 * @since 6.4.0 Added `layout.allowEditing`.
+	 * @since 6.4.0 Added `layout.allowEditing` and `typography.writingMode`.
 	 *
 	 * @var array
 	 */
@@ -409,6 +411,7 @@ class WP_Theme_JSON {
 			'textColumns'    => null,
 			'textDecoration' => null,
 			'textTransform'  => null,
+			'writingMode'    => null,
 		),
 	);
 
@@ -471,6 +474,7 @@ class WP_Theme_JSON {
 			'textColumns'    => null,
 			'textDecoration' => null,
 			'textTransform'  => null,
+			'writingMode'    => null,
 		),
 		'css'        => null,
 	);
diff --git a/src/wp-includes/theme.json b/src/wp-includes/theme.json
index fd116a42ba724..e209d947d105b 100644
--- a/src/wp-includes/theme.json
+++ b/src/wp-includes/theme.json
@@ -263,7 +263,8 @@
 			"letterSpacing": true,
 			"lineHeight": false,
 			"textDecoration": true,
-			"textTransform": true
+			"textTransform": true,
+			"writingMode": false
 		},
 		"blocks": {
 			"core/button": {