Hornsby
- County:
- Hardeman County
- County Seat:
- No
- Area (mi²):
- 1.052
- State:
- Tennessee
Hornsby is a town located in Hardeman County, Tennessee. Hornsby has a 2026 population of 257. Hornsby is currently declining at a rate of -0.77% annually and its population has decreased by -1.15% since the most recent census, which recorded a population of 260 in 2020.