diff --git a/packages/js/product-editor/changelog/poc-unique_id_field b/packages/js/product-editor/changelog/poc-unique_id_field
new file mode 100644
index 000000000000..f73a1290bada
--- /dev/null
+++ b/packages/js/product-editor/changelog/poc-unique_id_field
@@ -0,0 +1,4 @@
+Significance: patch
+Type: update
+
+Handle unique id error message
diff --git a/packages/js/product-editor/src/utils/get-product-error-message-and-props.ts b/packages/js/product-editor/src/utils/get-product-error-message-and-props.ts
index c37d6023da15..6d86db931373 100644
--- a/packages/js/product-editor/src/utils/get-product-error-message-and-props.ts
+++ b/packages/js/product-editor/src/utils/get-product-error-message-and-props.ts
@@ -7,6 +7,7 @@ export type WPErrorCode =
 	| 'variable_product_no_variation_prices'
 	| 'product_form_field_error'
 	| 'product_invalid_sku'
+	| 'product_invalid_global_unique_id'
 	| 'product_create_error'
 	| 'product_publish_error'
 	| 'product_preview_error';
@@ -56,6 +57,15 @@ export function getProductErrorMessageAndProps(
 				response.errorProps = { explicitDismiss: true };
 			}
 			break;
+		case 'product_invalid_global_unique_id':
+			response.message = __(
+				'Invalid or duplicated GTIN, UPC, EAN or ISBN.',
+				'woocommerce'
+			);
+			if ( visibleTab !== 'inventory' ) {
+				response.errorProps = { explicitDismiss: true };
+			}
+			break;
 		case 'product_create_error':
 			response.message = __( 'Failed to create product.', 'woocommerce' );
 			break;
diff --git a/plugins/woocommerce/changelog/add-unique-id-field b/plugins/woocommerce/changelog/add-unique-id-field
new file mode 100644
index 000000000000..1ba5e6f7e005
--- /dev/null
+++ b/plugins/woocommerce/changelog/add-unique-id-field
@@ -0,0 +1,4 @@
+Significance: minor
+Type: add
+
+Adds global_unique_id field to product and product variations
diff --git a/plugins/woocommerce/includes/abstracts/abstract-wc-product.php b/plugins/woocommerce/includes/abstracts/abstract-wc-product.php
index 9200e884f71f..6e85be8b8398 100644
--- a/plugins/woocommerce/includes/abstracts/abstract-wc-product.php
+++ b/plugins/woocommerce/includes/abstracts/abstract-wc-product.php
@@ -65,6 +65,7 @@ class WC_Product extends WC_Abstract_Legacy_Product {
 		'description'        => '',
 		'short_description'  => '',
 		'sku'                => '',
+		'global_unique_id'   => '',
 		'price'              => '',
 		'regular_price'      => '',
 		'sale_price'         => '',
@@ -251,7 +252,7 @@ public function get_short_description( $context = 'view' ) {
 	}
 
 	/**
-	 * Get SKU (Stock-keeping unit) - product unique ID.
+	 * Get SKU (Stock-keeping unit).
 	 *
 	 * @param  string $context What the value is for. Valid values are view and edit.
 	 * @return string
@@ -260,6 +261,17 @@ public function get_sku( $context = 'view' ) {
 		return $this->get_prop( 'sku', $context );
 	}
 
+	/**
+	 * Get Unique ID.
+	 *
+	 * @since 9.1.0
+	 * @param  string $context What the value is for. Valid values are view and edit.
+	 * @return string
+	 */
+	public function get_global_unique_id( $context = 'view' ) {
+		return $this->get_prop( 'global_unique_id', $context );
+	}
+
 	/**
 	 * Returns the product's active price.
 	 *
@@ -835,6 +847,29 @@ public function set_sku( $sku ) {
 		$this->set_prop( 'sku', $sku );
 	}
 
+	/**
+	 * Set global_unique_id
+	 *
+	 * @since 9.1.0
+	 * @param string $global_unique_id Unique ID.
+	 */
+	public function set_global_unique_id( $global_unique_id ) {
+		$global_unique_id = (string) $global_unique_id;
+		if ( $this->get_object_read() && ! empty( $global_unique_id ) && ! wc_product_has_global_unique_id( $this->get_id(), $global_unique_id ) ) {
+			$global_unique_id_found = wc_get_product_id_by_global_unique_id( $global_unique_id );
+
+			$this->error(
+				'product_invalid_global_unique_id',
+				__( 'Invalid or duplicated Unique ID.', 'woocommerce' ),
+				400,
+				array(
+					'resource_id' => $global_unique_id_found,
+				)
+			);
+		}
+		$this->set_prop( 'global_unique_id', $global_unique_id );
+	}
+
 	/**
 	 * Set the product's active price.
 	 *
diff --git a/plugins/woocommerce/includes/class-wc-install.php b/plugins/woocommerce/includes/class-wc-install.php
index 7a6a437c23b4..20ca22cd8a0e 100644
--- a/plugins/woocommerce/includes/class-wc-install.php
+++ b/plugins/woocommerce/includes/class-wc-install.php
@@ -1635,6 +1635,7 @@ private static function get_schema() {
 CREATE TABLE {$wpdb->prefix}wc_product_meta_lookup (
   `product_id` bigint(20) NOT NULL,
   `sku` varchar(100) NULL default '',
+  `global_unique_id` varchar(100) NULL default '',
   `virtual` tinyint(1) NULL default 0,
   `downloadable` tinyint(1) NULL default 0,
   `min_price` decimal(19,4) NULL default NULL,
diff --git a/plugins/woocommerce/includes/data-stores/class-wc-product-data-store-cpt.php b/plugins/woocommerce/includes/data-stores/class-wc-product-data-store-cpt.php
index eaa23276f9f9..7bdc8bd33687 100644
--- a/plugins/woocommerce/includes/data-stores/class-wc-product-data-store-cpt.php
+++ b/plugins/woocommerce/includes/data-stores/class-wc-product-data-store-cpt.php
@@ -29,6 +29,7 @@ class WC_Product_Data_Store_CPT extends WC_Data_Store_WP implements WC_Object_Da
 	protected $internal_meta_keys = array(
 		'_visibility',
 		'_sku',
+		'_global_unique_id',
 		'_price',
 		'_regular_price',
 		'_sale_price',
@@ -386,6 +387,7 @@ protected function read_product_data( &$product ) {
 		$post_meta_values  = get_post_meta( $id );
 		$meta_key_to_props = array(
 			'_sku'                   => 'sku',
+			'_global_unique_id'      => 'global_unique_id',
 			'_regular_price'         => 'regular_price',
 			'_sale_price'            => 'sale_price',
 			'_price'                 => 'price',
@@ -577,6 +579,7 @@ protected function read_downloads( &$product ) {
 	protected function update_post_meta( &$product, $force = false ) {
 		$meta_key_to_props = array(
 			'_sku'                   => 'sku',
+			'_global_unique_id'      => 'global_unique_id',
 			'_regular_price'         => 'regular_price',
 			'_sale_price'            => 'sale_price',
 			'_sale_price_dates_from' => 'date_on_sale_from',
@@ -743,7 +746,7 @@ protected function handle_updated_props( &$product ) {
 			}
 		}
 
-		if ( array_intersect( $this->updated_props, array( 'sku', 'regular_price', 'sale_price', 'date_on_sale_from', 'date_on_sale_to', 'total_sales', 'average_rating', 'stock_quantity', 'stock_status', 'manage_stock', 'downloadable', 'virtual', 'tax_status', 'tax_class' ) ) ) {
+		if ( array_intersect( $this->updated_props, array( 'sku', 'global_unique_id', 'regular_price', 'sale_price', 'date_on_sale_from', 'date_on_sale_to', 'total_sales', 'average_rating', 'stock_quantity', 'stock_status', 'manage_stock', 'downloadable', 'virtual', 'tax_status', 'tax_class' ) ) ) {
 			$this->update_lookup_table( $product->get_id(), 'wc_product_meta_lookup' );
 		}
 
@@ -1069,6 +1072,37 @@ public function is_existing_sku( $product_id, $sku ) {
 		);
 	}
 
+	/**
+	 * Check if product sku is found for any other product IDs.
+	 *
+	 * @since 9.1.0
+	 * @param int    $product_id Product ID.
+	 * @param string $global_unique_id Will be slashed to work around https://core.trac.wordpress.org/ticket/27421.
+	 * @return bool
+	 */
+	public function is_existing_global_unique_id( $product_id, $global_unique_id ) {
+		global $wpdb;
+
+		// phpcs:ignore WordPress.VIP.DirectDatabaseQuery.DirectQuery
+		return (bool) $wpdb->get_var(
+			$wpdb->prepare(
+				"
+				SELECT posts.ID
+				FROM {$wpdb->posts} as posts
+				INNER JOIN {$wpdb->wc_product_meta_lookup} AS lookup ON posts.ID = lookup.product_id
+				WHERE
+				posts.post_type IN ( 'product', 'product_variation' )
+				AND posts.post_status != 'trash'
+				AND lookup.global_unique_id = %s
+				AND lookup.product_id <> %d
+				LIMIT 1
+				",
+				wp_slash( $global_unique_id ),
+				$product_id
+			)
+		);
+	}
+
 	/**
 	 * Return product ID based on SKU.
 	 *
@@ -1099,6 +1133,42 @@ public function get_product_id_by_sku( $sku ) {
 		return (int) apply_filters( 'woocommerce_get_product_id_by_sku', $id, $sku );
 	}
 
+	/**
+	 * Return product ID based on Unique ID.
+	 *
+	 * @since 9.1.0
+	 * @param string $global_unique_id Product Unique ID.
+	 * @return int
+	 */
+	public function get_product_id_by_global_unique_id( $global_unique_id ) {
+		global $wpdb;
+
+		// phpcs:ignore WordPress.VIP.DirectDatabaseQuery.DirectQuery
+		$id = $wpdb->get_var(
+			$wpdb->prepare(
+				"
+				SELECT posts.ID
+				FROM {$wpdb->posts} as posts
+				INNER JOIN {$wpdb->wc_product_meta_lookup} AS lookup ON posts.ID = lookup.product_id
+				WHERE
+				posts.post_type IN ( 'product', 'product_variation' )
+				AND posts.post_status != 'trash'
+				AND lookup.global_unique_id = %s
+				LIMIT 1
+				",
+				$global_unique_id
+			)
+		);
+		/**
+		 * Hook woocommerce_get_product_id_by_global_unique_id.
+		 *
+		 * @since 9.1.0
+		 * @param mixed $id List of post statuses.
+		 * @param string $global_unique_id Unique ID.
+		 */
+		return (int) apply_filters( 'woocommerce_get_product_id_by_global_unique_id', $id, $global_unique_id );
+	}
+
 	/**
 	 * Returns an array of IDs of products that have sales starting soon.
 	 *
@@ -2168,20 +2238,21 @@ protected function get_data_for_lookup_table( $id, $table ) {
 			$price        = wc_format_decimal( get_post_meta( $id, '_price', true ) );
 			$sale_price   = wc_format_decimal( get_post_meta( $id, '_sale_price', true ) );
 			return array(
-				'product_id'     => absint( $id ),
-				'sku'            => get_post_meta( $id, '_sku', true ),
-				'virtual'        => 'yes' === get_post_meta( $id, '_virtual', true ) ? 1 : 0,
-				'downloadable'   => 'yes' === get_post_meta( $id, '_downloadable', true ) ? 1 : 0,
-				'min_price'      => reset( $price_meta ),
-				'max_price'      => end( $price_meta ),
-				'onsale'         => $sale_price && $price === $sale_price ? 1 : 0,
-				'stock_quantity' => $stock,
-				'stock_status'   => get_post_meta( $id, '_stock_status', true ),
-				'rating_count'   => array_sum( array_map( 'intval', (array) get_post_meta( $id, '_wc_rating_count', true ) ) ),
-				'average_rating' => get_post_meta( $id, '_wc_average_rating', true ),
-				'total_sales'    => get_post_meta( $id, 'total_sales', true ),
-				'tax_status'     => get_post_meta( $id, '_tax_status', true ),
-				'tax_class'      => get_post_meta( $id, '_tax_class', true ),
+				'product_id'       => absint( $id ),
+				'sku'              => get_post_meta( $id, '_sku', true ),
+				'global_unique_id' => get_post_meta( $id, '_global_unique_id', true ),
+				'virtual'          => 'yes' === get_post_meta( $id, '_virtual', true ) ? 1 : 0,
+				'downloadable'     => 'yes' === get_post_meta( $id, '_downloadable', true ) ? 1 : 0,
+				'min_price'        => reset( $price_meta ),
+				'max_price'        => end( $price_meta ),
+				'onsale'           => $sale_price && $price === $sale_price ? 1 : 0,
+				'stock_quantity'   => $stock,
+				'stock_status'     => get_post_meta( $id, '_stock_status', true ),
+				'rating_count'     => array_sum( array_map( 'intval', (array) get_post_meta( $id, '_wc_rating_count', true ) ) ),
+				'average_rating'   => get_post_meta( $id, '_wc_average_rating', true ),
+				'total_sales'      => get_post_meta( $id, 'total_sales', true ),
+				'tax_status'       => get_post_meta( $id, '_tax_status', true ),
+				'tax_class'        => get_post_meta( $id, '_tax_class', true ),
 			);
 		}
 		return array();
diff --git a/plugins/woocommerce/includes/data-stores/class-wc-product-variation-data-store-cpt.php b/plugins/woocommerce/includes/data-stores/class-wc-product-variation-data-store-cpt.php
index cf481afc41a3..131f6aa43816 100644
--- a/plugins/woocommerce/includes/data-stores/class-wc-product-variation-data-store-cpt.php
+++ b/plugins/woocommerce/includes/data-stores/class-wc-product-variation-data-store-cpt.php
@@ -367,6 +367,7 @@ protected function read_product_data( &$product ) {
 				'image_id'          => get_post_thumbnail_id( $id ),
 				'backorders'        => get_post_meta( $id, '_backorders', true ),
 				'sku'               => get_post_meta( $id, '_sku', true ),
+				'global_unique_id'  => get_post_meta( $id, '_global_unique_id', true ),
 				'stock_quantity'    => get_post_meta( $id, '_stock', true ),
 				'weight'            => get_post_meta( $id, '_weight', true ),
 				'length'            => get_post_meta( $id, '_length', true ),
@@ -403,6 +404,7 @@ protected function read_product_data( &$product ) {
 				'title'              => $parent_object ? $parent_object->post_title : '',
 				'status'             => $parent_object ? $parent_object->post_status : '',
 				'sku'                => get_post_meta( $product->get_parent_id(), '_sku', true ),
+				'global_unique_id'   => get_post_meta( $product->get_parent_id(), '_global_unique_id', true ),
 				'manage_stock'       => get_post_meta( $product->get_parent_id(), '_manage_stock', true ),
 				'backorders'         => get_post_meta( $product->get_parent_id(), '_backorders', true ),
 				'stock_quantity'     => wc_stock_amount( get_post_meta( $product->get_parent_id(), '_stock', true ) ),
diff --git a/plugins/woocommerce/includes/interfaces/class-wc-product-data-store-interface.php b/plugins/woocommerce/includes/interfaces/class-wc-product-data-store-interface.php
index 4c1a68c94ec6..e1e8150ac5e6 100644
--- a/plugins/woocommerce/includes/interfaces/class-wc-product-data-store-interface.php
+++ b/plugins/woocommerce/includes/interfaces/class-wc-product-data-store-interface.php
@@ -41,6 +41,15 @@ public function get_featured_product_ids();
 	 */
 	public function is_existing_sku( $product_id, $sku );
 
+	/**
+	 * Check if product unique ID is found for any other product IDs.
+	 *
+	 * @param int    $product_id Product ID.
+	 * @param string $global_unique_id Unique ID.
+	 * @return bool
+	 */
+	public function is_existing_global_unique_id( $product_id, $global_unique_id );
+
 	/**
 	 * Return product ID based on SKU.
 	 *
@@ -49,6 +58,14 @@ public function is_existing_sku( $product_id, $sku );
 	 */
 	public function get_product_id_by_sku( $sku );
 
+	/**
+	 * Return product ID based on Unique ID.
+	 *
+	 * @param string $global_unique_id Unique ID.
+	 * @return int
+	 */
+	public function get_product_id_by_global_unique_id( $global_unique_id );
+
 	/**
 	 * Returns an array of IDs of products that have sales starting soon.
 	 *
diff --git a/plugins/woocommerce/includes/rest-api/Controllers/Version3/class-wc-rest-product-variations-controller.php b/plugins/woocommerce/includes/rest-api/Controllers/Version3/class-wc-rest-product-variations-controller.php
index 22516844f3e4..aa298f527491 100644
--- a/plugins/woocommerce/includes/rest-api/Controllers/Version3/class-wc-rest-product-variations-controller.php
+++ b/plugins/woocommerce/includes/rest-api/Controllers/Version3/class-wc-rest-product-variations-controller.php
@@ -108,6 +108,7 @@ public function prepare_object_for_response( $object, $request ) {
 			'description'           => wc_format_content( $object->get_description() ),
 			'permalink'             => $object->get_permalink(),
 			'sku'                   => $object->get_sku(),
+			'global_unique_id'      => $object->get_global_unique_id(),
 			'price'                 => $object->get_price(),
 			'regular_price'         => $object->get_regular_price(),
 			'sale_price'            => $object->get_sale_price(),
@@ -193,6 +194,11 @@ protected function prepare_object_for_database( $request, $creating = false ) {
 			$variation->set_sku( wc_clean( $request['sku'] ) );
 		}
 
+		// Unique ID.
+		if ( isset( $request['global_unique_id'] ) ) {
+			$variation->set_global_unique_id( wc_clean( $request['global_unique_id'] ) );
+		}
+
 		// Thumbnail.
 		if ( isset( $request['image'] ) ) {
 			if ( is_array( $request['image'] ) ) {
@@ -535,7 +541,12 @@ public function get_item_schema() {
 					'readonly'    => true,
 				),
 				'sku'                   => array(
-					'description' => __( 'Unique identifier.', 'woocommerce' ),
+					'description' => __( 'Stock Keeping Unit.', 'woocommerce' ),
+					'type'        => 'string',
+					'context'     => array( 'view', 'edit' ),
+				),
+				'global_unique_id'      => array(
+					'description' => __( 'GTIN, UPC, EAN or ISBN.', 'woocommerce' ),
 					'type'        => 'string',
 					'context'     => array( 'view', 'edit' ),
 				),
diff --git a/plugins/woocommerce/includes/rest-api/Controllers/Version3/class-wc-rest-products-controller.php b/plugins/woocommerce/includes/rest-api/Controllers/Version3/class-wc-rest-products-controller.php
index 70ac43bd9f41..b4a3a933faa9 100644
--- a/plugins/woocommerce/includes/rest-api/Controllers/Version3/class-wc-rest-products-controller.php
+++ b/plugins/woocommerce/includes/rest-api/Controllers/Version3/class-wc-rest-products-controller.php
@@ -561,6 +561,11 @@ protected function prepare_object_for_database( $request, $creating = false ) {
 			$product->set_sku( wc_clean( $request['sku'] ) );
 		}
 
+		// Unique ID.
+		if ( isset( $request['global_unique_id'] ) ) {
+			$product->set_global_unique_id( wc_clean( $request['global_unique_id'] ) );
+		}
+
 		// Attributes.
 		if ( isset( $request['attributes'] ) ) {
 			$attributes = array();
@@ -987,7 +992,12 @@ public function get_item_schema() {
 					'context'     => array( 'view', 'edit' ),
 				),
 				'sku'                   => array(
-					'description' => __( 'Unique identifier.', 'woocommerce' ),
+					'description' => __( 'Stock Keeping Unit.', 'woocommerce' ),
+					'type'        => 'string',
+					'context'     => array( 'view', 'edit' ),
+				),
+				'global_unique_id'      => array(
+					'description' => __( 'GTIN, UPC, EAN or ISBN.', 'woocommerce' ),
 					'type'        => 'string',
 					'context'     => array( 'view', 'edit' ),
 				),
@@ -1662,6 +1672,10 @@ protected function get_product_data( $product, $context = 'view' ) {
 				$data['post_password'] = $product->get_post_password( $context );
 			}
 
+			if ( in_array( 'global_unique_id', $fields, true ) ) {
+				$data['global_unique_id'] = $product->get_global_unique_id( $context );
+			}
+
 			$post_type_obj = get_post_type_object( $this->post_type );
 			if ( is_post_type_viewable( $post_type_obj ) && $post_type_obj->public ) {
 				$permalink_template_requested = in_array( 'permalink_template', $fields, true );
diff --git a/plugins/woocommerce/includes/tracks/events/class-wc-products-tracking.php b/plugins/woocommerce/includes/tracks/events/class-wc-products-tracking.php
index 7bdb1c8c5adf..3056f5b07d4e 100644
--- a/plugins/woocommerce/includes/tracks/events/class-wc-products-tracking.php
+++ b/plugins/woocommerce/includes/tracks/events/class-wc-products-tracking.php
@@ -344,6 +344,7 @@ public function track_product_published( $product_id, $product, $changes = null
 			'tags'                 => count( $product->get_tag_ids() ),
 			'upsells'              => ! empty( $product->get_upsell_ids() ) ? 'yes' : 'no',
 			'weight'               => $product->get_weight() ? 'yes' : 'no',
+			'global_unique_id'     => $product->get_global_unique_id() ? 'yes' : 'no',
 		);
 
 		WC_Tracks::record_event( 'product_add_publish', $properties );
diff --git a/plugins/woocommerce/includes/wc-product-functions.php b/plugins/woocommerce/includes/wc-product-functions.php
index f5dc753c9b04..92341e606ee2 100644
--- a/plugins/woocommerce/includes/wc-product-functions.php
+++ b/plugins/woocommerce/includes/wc-product-functions.php
@@ -639,6 +639,47 @@ function wc_product_has_unique_sku( $product_id, $sku ) {
 	return true;
 }
 
+/**
+ * Check if product unique ID is unique.
+ *
+ * @since 9.1.0
+ * @param int    $product_id Product ID.
+ * @param string $global_unique_id Product Unique ID.
+ * @return bool
+ */
+function wc_product_has_global_unique_id( $product_id, $global_unique_id ) {
+	/**
+	 * Gives plugins an opportunity to verify Unique ID uniqueness themselves.
+	 *
+	 * @since 9.1.0
+	 *
+	 * @param bool|null $has_global_unique_id Set to a boolean value to short-circuit the default Unique ID check.
+	 * @param int $product_id The ID of the current product.
+	 * @param string $sku The Unique ID to check for uniqueness.
+	 */
+	$has_global_unique_id = apply_filters( 'wc_product_pre_has_global_unique_id', null, $product_id, $global_unique_id );
+	if ( ! is_null( $has_global_unique_id ) ) {
+		return boolval( $has_global_unique_id );
+	}
+
+	$data_store             = WC_Data_Store::load( 'product' );
+	$global_unique_id_found = $data_store->is_existing_global_unique_id( $product_id, $global_unique_id );
+	/**
+	 * Gives plugins an opportunity to verify Unique ID uniqueness themselves.
+	 *
+	 * @since 9.1.0
+	 *
+	 * @param boolean $global_unique_id_found Whether the Unique ID is found.
+	 * @param int $product_id The ID of the current product.
+	 * @param string $sku The Unique ID to check for uniqueness.
+	 */
+	if ( apply_filters( 'wc_product_has_global_unique_id', $global_unique_id_found, $product_id, $global_unique_id ) ) {
+		return false;
+	}
+
+	return true;
+}
+
 /**
  * Force a unique SKU.
  *
@@ -692,6 +733,18 @@ function wc_get_product_id_by_sku( $sku ) {
 	return $data_store->get_product_id_by_sku( $sku );
 }
 
+/**
+ * Get product ID by Unique ID.
+ *
+ * @since  9.1.0
+ * @param  string $global_unique_id Product Unique ID.
+ * @return int
+ */
+function wc_get_product_id_by_global_unique_id( $global_unique_id ) {
+	$data_store = WC_Data_Store::load( 'product' );
+	return $data_store->get_product_id_by_global_unique_id( $global_unique_id );
+}
+
 /**
  * Get attributes/data for an individual variation from the database and maintain it's integrity.
  *
@@ -1421,6 +1474,7 @@ function wc_update_product_lookup_tables() {
 		'min_max_price',
 		'stock_quantity',
 		'sku',
+		'global_unique_id',
 		'stock_status',
 		'average_rating',
 		'total_sales',
diff --git a/plugins/woocommerce/src/Internal/Features/ProductBlockEditor/ProductTemplates/ProductVariationTemplate.php b/plugins/woocommerce/src/Internal/Features/ProductBlockEditor/ProductTemplates/ProductVariationTemplate.php
index facffee7a676..665ef1be5e9e 100644
--- a/plugins/woocommerce/src/Internal/Features/ProductBlockEditor/ProductTemplates/ProductVariationTemplate.php
+++ b/plugins/woocommerce/src/Internal/Features/ProductBlockEditor/ProductTemplates/ProductVariationTemplate.php
@@ -309,13 +309,41 @@ protected function add_inventory_group_blocks() {
 				'order' => 10,
 			)
 		);
-		$product_inventory_inner_section->add_block(
+		$inventory_columns               = $product_inventory_inner_section->add_block(
+			array(
+				'id'        => 'product-inventory-inner-columns',
+				'blockName' => 'core/columns',
+			)
+		);
+		$inventory_columns->add_block(
+			array(
+				'id'        => 'product-inventory-inner-column1',
+				'blockName' => 'core/column',
+			)
+		)->add_block(
 			array(
 				'id'        => 'product-variation-sku-field',
 				'blockName' => 'woocommerce/product-sku-field',
 				'order'     => 10,
 			)
 		);
+		$inventory_columns->add_block(
+			array(
+				'id'        => 'product-inventory-inner-column2',
+				'blockName' => 'core/column',
+			)
+		)->add_block(
+			array(
+				'id'         => 'product-unique-id-field',
+				'blockName'  => 'woocommerce/product-text-field',
+				'order'      => 20,
+				'attributes' => array(
+					'property' => 'global_unique_id',
+					'label'    => __( 'GTIN, UPC, EAN or ISBN', 'woocommerce' ),
+					'tooltip'  => __( 'Enter a barcode or any other identifier unique to this product. It can help you list this product on other channels or marketplaces.', 'woocommerce' ),
+				),
+			)
+		);
 		$product_inventory_inner_section->add_block(
 			array(
 				'id'         => 'product-variation-track-stock',
diff --git a/plugins/woocommerce/src/Internal/Features/ProductBlockEditor/ProductTemplates/SimpleProductTemplate.php b/plugins/woocommerce/src/Internal/Features/ProductBlockEditor/ProductTemplates/SimpleProductTemplate.php
index f8f14290f565..18a36daa6818 100644
--- a/plugins/woocommerce/src/Internal/Features/ProductBlockEditor/ProductTemplates/SimpleProductTemplate.php
+++ b/plugins/woocommerce/src/Internal/Features/ProductBlockEditor/ProductTemplates/SimpleProductTemplate.php
@@ -730,7 +730,18 @@ private function add_inventory_group_blocks() {
 				'order' => 10,
 			)
 		);
-		$product_inventory_inner_section->add_block(
+		$inventory_columns               = $product_inventory_inner_section->add_block(
+			array(
+				'id'        => 'product-inventory-inner-columns',
+				'blockName' => 'core/columns',
+			)
+		);
+		$inventory_columns->add_block(
+			array(
+				'id'        => 'product-inventory-inner-column1',
+				'blockName' => 'core/column',
+			)
+		)->add_block(
 			array(
 				'id'                => 'product-sku-field',
 				'blockName'         => 'woocommerce/product-sku-field',
@@ -742,6 +753,28 @@ private function add_inventory_group_blocks() {
 				),
 			)
 		);
+		$inventory_columns->add_block(
+			array(
+				'id'        => 'product-inventory-inner-column2',
+				'blockName' => 'core/column',
+			)
+		)->add_block(
+			array(
+				'id'                => 'product-unique-id-field',
+				'blockName'         => 'woocommerce/product-text-field',
+				'order'             => 20,
+				'attributes'        => array(
+					'property' => 'global_unique_id',
+					'label'    => __( 'GTIN, UPC, EAN or ISBN', 'woocommerce' ),
+					'tooltip'  => __( 'Enter a barcode or any other identifier unique to this product. It can help you list this product on other channels or marketplaces.', 'woocommerce' ),
+				),
+				'disableConditions' => array(
+					array(
+						'expression' => 'editedProduct.type === "variable"',
+					),
+				),
+			)
+		);
 
 		$manage_stock = 'yes' === get_option( 'woocommerce_manage_stock' );
 		$product_inventory_inner_section->add_block(
diff --git a/plugins/woocommerce/tests/legacy/unit-tests/rest-api/Tests/Version3/product-variations.php b/plugins/woocommerce/tests/legacy/unit-tests/rest-api/Tests/Version3/product-variations.php
index 08d70d1200fe..a9c10ee364c5 100644
--- a/plugins/woocommerce/tests/legacy/unit-tests/rest-api/Tests/Version3/product-variations.php
+++ b/plugins/woocommerce/tests/legacy/unit-tests/rest-api/Tests/Version3/product-variations.php
@@ -400,13 +400,14 @@ public function test_variation_schema() {
 		$data       = $response->get_data();
 		$properties = $data['schema']['properties'];
 
-		$this->assertEquals( 39, count( $properties ) );
+		$this->assertEquals( 40, count( $properties ) );
 		$this->assertArrayHasKey( 'id', $properties );
 		$this->assertArrayHasKey( 'date_created', $properties );
 		$this->assertArrayHasKey( 'date_modified', $properties );
 		$this->assertArrayHasKey( 'description', $properties );
 		$this->assertArrayHasKey( 'permalink', $properties );
 		$this->assertArrayHasKey( 'sku', $properties );
+		$this->assertArrayHasKey( 'global_unique_id', $properties );
 		$this->assertArrayHasKey( 'price', $properties );
 		$this->assertArrayHasKey( 'regular_price', $properties );
 		$this->assertArrayHasKey( 'sale_price', $properties );
diff --git a/plugins/woocommerce/tests/legacy/unit-tests/rest-api/Tests/Version3/products.php b/plugins/woocommerce/tests/legacy/unit-tests/rest-api/Tests/Version3/products.php
index 94a3d2159b50..b05e7dc4da6a 100644
--- a/plugins/woocommerce/tests/legacy/unit-tests/rest-api/Tests/Version3/products.php
+++ b/plugins/woocommerce/tests/legacy/unit-tests/rest-api/Tests/Version3/products.php
@@ -649,7 +649,7 @@ public function test_product_schema() {
 		$response   = $this->server->dispatch( $request );
 		$data       = $response->get_data();
 		$properties = $data['schema']['properties'];
-		$this->assertEquals( 70, count( $properties ) );
+		$this->assertEquals( 71, count( $properties ) );
 	}
 
 	/**
diff --git a/plugins/woocommerce/tests/php/includes/rest-api/Controllers/Version3/class-wc-rest-products-controller-tests.php b/plugins/woocommerce/tests/php/includes/rest-api/Controllers/Version3/class-wc-rest-products-controller-tests.php
index 71d588907a5e..a8846c0416b0 100644
--- a/plugins/woocommerce/tests/php/includes/rest-api/Controllers/Version3/class-wc-rest-products-controller-tests.php
+++ b/plugins/woocommerce/tests/php/includes/rest-api/Controllers/Version3/class-wc-rest-products-controller-tests.php
@@ -97,6 +97,7 @@ public function get_expected_response_fields() {
 			'description',
 			'short_description',
 			'sku',
+			'global_unique_id',
 			'price',
 			'regular_price',
 			'sale_price',