Lake Buckhorn is a census-designated place (CDP) in Mechanic Township, Holmes County, Ohio, United States.

[4] The community is built around 220-acre (89 ha) Lake Buckhorn, a reservoir impounded in 1967.

[4] Lake Buckhorn is in south-central Holmes County on a tributary of Doughty Creek, a southwest-flowing tributary of Killbuck Creek and part of the Walhonding River watershed flowing to the Ohio River.

Ohio State Route 83 forms the eastern boundary of the community.

The highway leads north 8 miles (13 km) to Millersburg, the Holmes county seat, and south 16 miles (26 km) to Coshocton.