Seiji Osaka

Seiji Ōsaka
逢坂 誠二
Official portrait, 2011
Deputy Leader of the
Constitutional Democratic Party
In office
30 November 2021 – 30 September 2024
LeaderKenta Izumi
Member of the House of Representatives
In office
15 December 2014 – 23 January 2026
Preceded byKazuo Maeda
Succeeded byJun Mukōyama
ConstituencyHokkaido 8th
In office
12 September 2005 – 16 November 2012
Preceded byMulti-member district
Succeeded byKazuo Maeda
ConstituencyHokkaido PR (2005–2009)
Hokkaido 8th (2009–2012)
Mayor of Niseko
In office
November 1994 – 29 August 2005
Preceded byTomio Watanabe
Succeeded byRyūichi Satō
Personal details
Born (1959-04-24) 24 April 1959
PartyCentrist Reform Alliance
Other political
affiliations
Independent (1994–2005)
DPJ (2005–2016)
DP (2016–2017)
CDP (2017–2026)
Alma materHokkaido University
WebsiteOfficial website
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Seiji Osaka (逢坂 誠二, Ōsaka Seiji; born 24 April 1959) is a Japanese politician of the Constitutional Democratic Party of Japan (CDP), a member of the House of Representatives in the Diet (national legislature).