Vermilion Parish (French: Paroisse de Vermillion) is a parish located in the U.S. state of Louisiana, created in 1844. The parish seat is Abbeville. Vermilion Parish is part of the Lafayette metropolitan statistical area, and located in southern Acadiana. At the 2020 U.S. census, the population was 57,359.
In the past several decades, much of the southern portion of the parish has been swept away by water erosion, especially after Hurricane Katrina and Hurricane Rita in 2005.