Sixmile, also spelled Six Mile, is an unincorporated community in Bibb County, Alabama, United States.
The community is named for Sixmile Creek and was once home to the Sixmile Academy and a forge. A newspaper, the Bibb Blade, began printing in 1879 in Sixmile.
A post office operated under the name Sixmile from 1857 to 1909.
Sixmile is located at and has an elevation of .