Marj, El Merj in Benghazi and Egyptian Arabic, is a city in northeastern Libya and the administrative seat of the Marj District. It lies in an upland valley separated from the Mediterranean Sea by a range of hills, part of the Jebel Akhdar Mountains, and is generally believed to be the site of the ancient city of Barca.

Marj, pronounced El Merj in Benghazi and Egyptian Arabic, is a district (shabiyah) of northeastern Libya on the Mediterranean Sea coast. Its administrative seat is the city of Marj, which the ancient and medieval Barca. Marj is situated on the Cyrenaica Plateau at the western edge of the Jebel Akhdar. In the 2007 administrative reorganization, part of the territory formerly in Al Hizam al Akhdar District was transferred to Marj. In the north, Marj has a shoreline on the Mediterranean Sea. On land, it borders Jabal al Akhdar in the east, Al Wahat in south and Benghazi in the west.