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is a town in Franklin County, Tennessee, United States. The population was 2,152 at the 2000 census. It is the fourth largest in the county, and is usually referred to as simply "Estill" by its inhabitants.
Estill Springs is part of the Tullahoma, Tennessee, Micropolitan Statistical Area.
According to the United States Census Bureau, the town has a total area of 5.0 square miles (12.9 km²), of which, 4.7 square miles (12.2 km²) of it is land and 0.3 square miles (0.7 km²) of it (5.61%) is water.