Somerville is a town in Fayette County, Tennessee, United States.

[6] The town was named to honor Lieutenant Robert Somerville, who was killed in 1814 during the Battle of Horseshoe Bend in central Alabama while serving under General Andrew Jackson.

Somerville is located slightly northeast of the center of Fayette County at 35°14′15″N 89°21′30″W / 35.23750°N 89.35833°W / 35.23750; -89.35833 (35.237623, -89.358400).

North of US 64, it is the town's Main Street and leads 26 miles (42 km) to Brownsville.

The Loosahatchie River, a west-flowing tributary of the Mississippi, runs past the northern end of the town.

As of the 2020 United States census, there were 3,415 people, 1,187 households, and 734 families residing in the town.