The Seman is a major river in western Albania. It is formed by the confluence of the rivers Devoll and Osum, a few km west of Kuçovë. It is 85 km long (281 km with its longest source river Devoll) and its drainage basin is 5649 km2. Its average discharge is 95.7 m3/s. It meanders generally westwards through a flat lowland. Near Fier, the Seman receives the Gjanica from the left. It flows into the Adriatic Sea at the southern margin of the Divjakë-Karavasta National Park.

Name

In classical antiquity, the Seman River was known as the Apsus, which is a derivative of the Indo-European root *ăp- "water, river". The Illyrian hydronym Apsus, corresponds to Apsias, a river name in southern Italy brought by Illyrian migrations (Iapygians) in the region.