Maghnia (Arabic: مغنية) (formerly Marnia) is a town in Tlemcen Province, northwestern Algeria.

[citation needed] Archaeologists have found evidence of prehistoric people in the area, who were displaced by the Phoenicians.

The remnants of burned Ancient Roman military posts called Numerus Syrorum were discovered by the French army in 1836, when they entered the area; these posts were occupied, according to the inscriptions, by the numerus Severianus Alexandrinus Syrorum,[1] a unit of Syrian archers.

Due to its convenient geographical location—within the watershed of Wadi Tafna on the route to Fes from Tlemcen, Maghnia later served as a marketplace for regional nomads.

This article about a location in Tlemcen Province is a stub.