Nanafalia is an unincorporated community and census-designated place (CDP) in Marengo County, Alabama, United States.

The community is located on a ridge above the Tombigbee River, and the name is derived from the Choctaw words for long hill.

[4] Nanafalia is in southwestern Marengo County, along Alabama State Route 10.

State Route 69 forms the western border of the CDP.

This Marengo County, Alabama state location article is a stub.