Baldwin is a town in St. Mary Parish, Louisiana, United States. The population was 2,497 at the 2000 census. It is part of the Morgan City Micropolitan Statistical Area.
The Louisiana physician and politician Alvan Lafargue practiced in Baldwin, his wife's hometown, prior to 1915.
Baldwin is located at 29°50′10″N 91°32′56″W / 29.83611°N 91.54889°W / 29.83611; -91.54889 (29.836039, -91.548799).