was a town located in Hita District, Ōita Prefecture, Japan.
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.
Notable residents
- Hajime Isayama, Japanese Manga artist and author of Attack on Titan