Ōeyama, Mountain summit in Kyoto Prefecture, Japan.

Ōeyama is a 480 meter summit located between Nishikyo Ward of Kyoto and Kameoka, offering multiple hiking trails through forested slopes. The terrain features varying difficulty levels and passes through dense woodland areas typical of the region's mountain landscapes.

The pass on Ōeyama, once called Ōeno-saka, was the San'indō route where travellers from Heian-kyō passed Ōeno-seki to leave the capital for Tanba Province. In the Jōwa Incident and the Hōgen rebellion troops held the slope to stop suspicious persons entering or leaving Kyoto. Minamoto no Yoshitsune, Ashikaga Takauji and Akechi Mitsuhide are said to have crossed it on their way to battle, and a checking station was set up in the Muromachi period.

Ōeyama holds a place in local folklore as the former dwelling of Shuten-dōji, a legendary oni figure in Japanese stories. A kubizuka monument marks where the defeated oni's head is said to have been buried, connecting the mountain to these mythological narratives.

The hiking trails require sturdy footwear and adequate water supplies for all visitors and throughout the year. The paths offer different challenges, so both beginners and experienced hikers can find suitable routes.

The pass below the summit, not the mountain itself, carries the film history: from the Taishō era to before the war, Kyoto studios used the Oinosaka slope for period dramas. Shooting ran from after nine until four, because farmers' carts hauling night soil to Kyoto clogged the road early and returned full in the late afternoon.