Hiroyuki Nagahama (長浜 博行, Nagahama Hiroyuki, born 1958) is a Japanese politician of the Constitutional Democratic Party of Japan, and a member of the House of Councillors in the Diet (national legislature).

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Hiroyuki Nagahama
長浜 博行
Vice President of the House of Councillors
Incumbent
Assumed office 3 August 2022
President	Hidehisa Otsuji
Preceded by	Toshio Ogawa
Minister of the Environment
In office 1 October 2012 – 26 December 2012
Prime Minister	Yoshihiko Noda
Preceded by	Goshi Hosono
Succeeded by	Nobuteru Ishihara
Member of the House of Councillors
Incumbent
Assumed office 29 July 2007
Constituency	Chiba at-large
Member of the House of Representatives
In office 26 June 2000 – 12 July 2007
Constituency	Chiba 8th (2000-2003) Southern Kanto PR block (2003-2007)
In office 19 July 1993 – 27 September 1996
Constituency	Chiba 4th
Personal details
Born	(1958-10-20) October 20, 1958 (age 65) Sumida, Tokyo, Japan
Political party	CDP (2018-present)
Other political affiliations	Japan New (1993-1994, merger) New Frontier (1994-1997) Democratic (1998-2016, merger) DP (2016-2018, merger) DPP (2018)
Alma mater	Waseda University

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A native of Tokyo and graduate of Waseda University, he was elected to the House of Representatives for the first time in 1993 as a member of Morihiro Hosokawa's Japan New Party. After losing his seat in 1996 as a member of the New Frontier Party, he was elected again in 2000 as a member of DPJ. In 2007, he was elected to the House of Councillors for the first time.

In 2012, Nagahama was appointed the Minister of the Environment.^[1]