Mostyn is a small village in Flintshire, North Wales, lying on the estuary of the River Dee.
Mostyn once served as a port from which ferries used to sail (until 2004) to Dublin on the Liverpool-Dublin route. Today, manufactured wings for the massive Airbus A380 aircraft leave Mostyn on the ship Ville De Bordeaux, after travelling down the River Dee by barge from the Airbus wing factory at Broughton, Flintshire.
Mostyn's port area is home to the headquarters of Warwick International Group Limited, manufacturers of bleach activators for detergent applications.