EAN for WooCommerce Pro plugin lets you manage product EAN in WooCommerce.
The International Article Number (also known as European Article Number or EAN) is a standard describing a barcode symbology and numbering system used in global trade to identify a specific retail product type, in a specific packaging configuration, from a specific manufacturer. The same numbers can be referred to as GTIN. EAN barcodes are used worldwide for lookup at retail point of sale, but can also be used as numbers for other purposes such as wholesale ordering or accounting.
The plugin lets you save the EAN number for each product and optionally display the barcode on both backend and frontend. For variable products you can set EAN for each variation individually or set single number for all variations.