Oka may refer to:

• (List of Japanese surnames) Oka is a Japanese surname.
• (cars) Oka is the name of a car produced by Lada (named after the river).
• (food) Oka cheese is a semi-soft surface ripened cheese.
• (food) Oka is an alternate spelling of oca, the root vegetable.
• (geography) Oka River is a river in the European part of Russia.
• (geography) Oka River is also a river in Siberia.
• (geography) Oka is a small town in Quebec, Canada. It is noted for Oka cheese and the Oka Crisis of 1990 (which sometimes referred to simply as "Oka" .
• (metrics) Oka is Turkish measure of weight equaled to 1.28 kilograms.
• (military) Ōka, or Ohka was a kamikaze aircraft in World War II
• (military) The R-400 Oka is a theatre ballistic missile deployed by the Soviet Union.
• (music) OKA - An Australian based band playing didgeridoo based World Music
• (aviation) The IATA airport code for Naha Airport
• (lifestyles) OKA - Otherkin Alliance. A web based support group for Otherkin (otherkinalliance.org).

Japanese surnames

Ока | Oka | Oka (homonymie) | Oka | Oka | Ока