Carnes is a small unincorporated community in southern Forrest County, Mississippi.

It is part of the Hattiesburg, Mississippi Metropolitan Statistical Area.

Carnes was settled in 1905 and was originally named Helena.

Carnes is located on the former Gulf and Ship Island Railroad and was once home to two pine lumber mills and the Red Creek Lumber Company.

[3] Carnes is served by the Forrest County Public School System.