The Amite River /ˈeɪ.mit/ (French: Rivière Amite) is a tributary of Lake Maurepas in Mississippi and Louisiana in the United States.

[2] It starts as two forks in southwestern Mississippi and flows south through Louisiana, passing Greater Baton Rouge, to Lake Maurepas.

The lower 37 miles (59.5 km) of the river is navigable.

Amite could be an name derived from the Choctaw language meaning "young", although folk etymology holds it to be a corruption of the French amitié meaning "friendship".

[3] A 3.09-kilogram (6.8 lb) white bass (Morone chrysops) was caught on August 27, 2010 on the Amite River in Louisiana by angler Corey Crochet, tying an International Game Fish Association world record.