Ōyama, Ōita

Ōyama (大山町, Ōyama-machi^?) was a town located in Hita District, Ōita Prefecture, Japan.

As of 2003, the town had an estimated population of 3,729 and the density of 81.56 persons per km². The total area was 45.72 km².

On March 22, 2005, Ōyama, along with the town of Amagase, and the villages of Kamitsue, Maetsue and Nakatsue (all from Hita District), was merged into the expanded city of Hita.