Ōi

Ōi in Japan may refer to:

* Ōi, Fukui
* Ōi District, Fukui
* Ōi, Kanagawa
* Ōi, Saitama
* The Oi River in Shizuoka Prefecture
* A part of the Katsura River in Kyoto Prefecture is called Ōi River

See also

* Oi
* OI