was a after Enkyō and before Shōwa. This period spanned 11 months from April 1311 through February 1312. The reigning emperor was .
Change of era
- 1311 : The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Enkyō 4. The era name is derived from the Old Book of Tang (10th century AD) and combines the characters ("balanced, fitting, suitable") and ("growing, increasing").
Events of the Ōchō era
Initially, former-Emperor Fushimi administered the court up through the time he took the tonsure as a Buddhist monk, which happened after this nengō ended.
- 1311 (Ōchō 1, 1st month): The sesshō, Takatsukasa Fuyuhira assisted at Emperor Hanazono's coming of age ceremony.