Luca Marin (born 9 April 1986 in Vittoria, Province of Ragusa) is a former Italian medley swimmer. He specialized in the 400 m medley, and won ten medals at European and World Championships in this event. At the 2006 European Short Course Swimming Championships he won a gold medal, beating László Cseh, the world record holder. At the top of his career, he was trained by the Albanian coach Gjon Shyti.