Kiln is an unincorporated community and census-designated place (CDP) in Hancock County, Mississippi, United States. The town is located about 50 miles (80 km) northeast of New Orleans, Louisiana. It is part of the Gulfport-Biloxi Metropolitan Statistical Area. The population was 2,238 at the 2010 census.

Hancock County is the southernmost county of the U.S. state of Mississippi and is named for Founding Father John Hancock. As of the 2020 census, the population was 46,053. Its county seat is Bay St. Louis.