is a Japanese politician and the current governor of Saitama Prefecture in Japan. He assumed office replacing Kiyoshi Ueda in the August 2019 gubernatorial elections.Former Upper House lawmaker Motohiro Ono beats ruling bloc-backed rival to become Saitama governor, Japan Times, 9 October 2019.Ex-lawmaker beats ruling bloc-backed rival in Saitama governor race The Mainichi, 9 October 2019.

Ōno previously served as a member of the House of Councilors from 2010 to 2019 and was a senior researcher at the .

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