Medea is a comune (municipality) in the Regional decentralization entity of Gorizia, in the Italian region of Friuli-Venezia Giulia. It is located about 45 kilometres (28 mi) northwest of Trieste and about 15 kilometres (9 mi) west of Gorizia.
As of 31 December 2004, the comune had a population of 918 and covered an area of 7.3 square kilometres (2.8 sq mi).