Erath is a town in Vermilion Parish, Louisiana, United States. The population was 2,187 at the 2000 census. It is part of the Abbeville Micropolitan Statistical Area.
Erath is home of the Acadian Museum.
Allen Bares, who served in both houses of the Louisiana State Legislature from 1972 to 1992, was born in Vermilion Parish and graduated from Erath High School in 1954.