Oku
Oku or OKU may refer to:
- Oku, Cameroon, subdivision in the Northwest Region of Cameroon
 - Oku language, a Grassfields Bantu language of Cameroon
 - Oku people (Sierra Leone), an ethnic group of Yoruba descent in Sierra Leone.
 - Ökü, a village in Azerbaijan
 - Oku District, Okayama, a former district located in Okayama Prefecture, Japan 
- Oku, Okayama, a former town in the district, merged with other towns to create the city of Setouchi
 
 - Oku (surname), a common Japanese surname
 - Princess Ōku (661–702), a Japanese princess during the Asuka period in Japanese history
 - OKU, IATA Airport Code for Mokuti Lodge Airport in Namibia
 - Ogan Komering Ulu Regency, a province in South Sumatra, Indonesia
 - Osaka Kyoiku University, a national university in Japan
 
See also
- Oku Station (disambiguation), several train stations in Japan