Ryuichi Yoneyama

Ryuichi Yoneyama
米山 隆一
Yoneyama in 2022
Member of the House of Representatives
In office
3 November 2021 – 23 January 2026
Preceded byHirohiko Izumida
Succeeded byEiichiro Washio
ConstituencyNiigata 5th (2021–2024)
Niigata 4th (2024–2026)
Governor of Niigata Prefecture
In office
25 October 2016 – 27 April 2018
MonarchAkihito
Preceded byHirohiko Izumida
Succeeded byHideyo Hanazumi
Personal details
BornRyūichi Aikō (愛甲 隆一)
(1967-09-08) 8 September 1967
PartyCRA (since 2026)
Other political
affiliations
Spouse
(m. 2020)
Alma materUniversity of Tokyo (PhD)
ProfessionPhysician
Lawyer
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Ryuichi Yoneyama (米山 隆一, Yoneyama Ryūichi; born 8 September 1967) is a Japanese politician and a former Governor of Niigata Prefecture. Prior to entering politics, Yoneyama worked as a radiology researcher at the University of Tokyo Hospital and was also trained as a lawyer.