Hamler
- County:
- Henry County
- County Seat:
- No
- Area (mi²):
- 0.826
- State:
- Ohio
Hamler is a village located in Henry County, Ohio. Hamler has a 2026 population of 600. Hamler is currently declining at a rate of -0.33% annually and its population has decreased by -0.5% since the most recent census, which recorded a population of 603 in 2020.