Maringouin is a town in Iberville Parish, Louisiana, United States. The population was 1,262 at the 2000 census. It is part of the Baton Rouge Metropolitan Statistical Area.
Maringouin is the boyhood home and residence of Louisiana State Senator Robert M. Marionneaux, an attorney in Baton Rouge.
Maringouin is located at 30°29′27″N 91°31′8″W / 30.49083°N 91.51889°W / 30.49083; -91.51889 (30.490911, -91.519023).