Onuma, Ōnuma or Oonuma (written: 大沼 lit. "big swamp", おおぬま in hiragana) is a Japanese surname. Notable people with the surname include:
- Ayako Ōnuma (大沼 綾子, born 1979), Japanese volleyball player
- Koji Onuma (大沼 幸二, born 1979), Japanese baseball player
- Shin Ōnuma (大沼 心), Japanese animation and theatre director
Onuma (written: 小沼 lit. "small swamp", おぬま in hiragana) is a separate Japanese surname, though both may be transliterated the same way. Notable people with the surname include:
- Tan Onuma (小沼 丹, 1918–1996), Japanese writer
This page lists people with the surname Onuma.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.