Gallaway is a city in Fayette County, Tennessee, United States.

Routes 70 and 79 pass through the northwest side of the city as a single two-lane highway, leading northeast 5 miles (8 km) to Braden and southwest 4 miles (6 km) to Arlington.

Tennessee State Route 196 leads south 6.5 miles (10.5 km) to Hickory Withe.

According to the United States Census Bureau, the city of Gallaway has a total area of 6.1 square miles (15.9 km2), all land.

[5] The Loosahatchie River, a tributary of the Mississippi, flows from east to west through the southern part of the city limits.