Chatham is a town in Jackson Parish, Louisiana, United States. The population was 491 in 2020. It is part of the Ruston micropolitan statistical area.
Southwest of Chatham is Caney Lake and the Jimmie Davis State Park.
According to the United States Census Bureau, the town has a total area of , of which is land and (13.91%) is water.
As of the 2020 United States census, there were 491 people, 316 households, and 157 families residing in the town.