Jacopo Marin (born 24 March 1984 in Grado) is a former sprinter from Italy who specialized in the 400 metres.
His personal best time is 46.99 seconds, achieved in Velenje (Slovenia). He won a gold medal in the 4 ÃÂ 400 metres relay at the 2009 European Indoor Championships, together with teammates Matteo Galvan, Domenico Rao and Claudio Licciardello.