Mercer is an unincorporated community in Madison County, Tennessee, United States.

[3] It is located along State Route 138 halfway between Interstate 40 and Toone, just east of the Hatchie River.

By the turn of the century, a lumber company and several churches had been established in the area.

The community eventually had a bank and an opera house, but the former failed in 1933 and the latter burned down in the late 20th century.

This Madison County, Tennessee geography–related article is a stub.