Sumio Mabuchi

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Sumio Mabuchi
馬淵 澄夫
Minister of Land, Infrastructure, Transport and Tourism
In office
17 September 2010 – 14 January 2011
Prime Minister Naoto Kan
Preceded by Seiji Maehara
Succeeded by Akihiro Ohata
Personal details
Born (1960-08-23) 23 August 1960 (age 56)
Nara, Japan
Political party Democratic Party
Alma mater Yokohama National University
Website Official website

Sumio Mabuchi (馬淵 澄夫, Mabuchi Sumio, born 23 August 1960) is a Japanese politician of the Democratic Party of Japan, a member of the House of Representatives in the Diet (national legislature).

Early life and education[edit]

A native of Nara, Mabuchi was born on 23 August 1960.[1] He holds a bachelor's degree in civil engineering, which he received from Yokohama National University in March 1984.[2]


Until 2000, Mabuchi worked in private sector and became director of the firm he was working for at age 32.[3] He was elected to the House of Representatives for the first time in 2003 after an unsuccessful run in 2000.[4] He was appointed senior vice minister of land, infrastructure, transport and tourism in September 2009.[2]

On 17 September 2010, Mabuchi was named as the new minister of land, infrastructure, transport and tourism in the reshuffled Naoto Kan cabinet.[5] Mabuchi left prime minister Kan's cabinet on 14 January 2011,[6] after the then-opposition Liberal Democratic Party (LDP) passed a censure motion against him following the leaking of Japanese Coast Guard footage of the 2010 Senkaku boat collision incident. and ran unsuccessfully to replace him in the DPJ presidential election after Kan stepped down, losing to Yoshihiko Noda, who replaced Kan as Prime Minister.[4] After the Democratic Party of Japan suffered a major defeat to the LDP under Noda at Japanese general election, 2012. Noda resigned to accept responsibility for the defeat.[7]

The resulting DPJ presidential election was held on 25 December 2012, which was contested by Mabuchi and Banri Kaieda. It was won by Kaieda with 90 votes to Mabuchi's 54 votes.[8][9]


Mabuchi is a bodybuilder, and has been nicknamed "The Terminator".[4][10] On the other hand, he calls himself "lone gorilla".[3]

Personal life[edit]

Mabuchi is married and has six children, five of whom are girls.[3] His sparetime activities include surfing and cooking.[3]


  1. ^ "Sumio Mabuchi". DPJ. Retrieved 27 January 2013. 
  2. ^ a b "Sumio Mabuchi CV" (PDF). Japan Transport. Retrieved 27 January 2013. 
  3. ^ a b c d Tsuzaka, Naoki (23 August 2011). "'Lone gorilla' draws support from junior lawmakers". The Asahi Shimbun. Retrieved 27 January 2013. 
  4. ^ a b c Johnston, Eric, "Contenders' backgrounds", Japan Times, 28 August 2011, p. 2.
  5. ^ "Kan replaces over half of his Cabinet". Kyodo News. 17 September 2010. Retrieved 17 September 2010. 
  6. ^ "Japan PM adds new faces to cabinet in reshuffle". Agence France-Presse. 14 January 2011. Retrieved 14 January 2011. 
  7. ^ Mainichi Shimbun PM Noda to quit as DPJ chief after electoral disaster 17 December 2012
  8. ^ Daily Yomiuri Kaieda elected new DPJ leader 26 December 2012
  9. ^ Japan Times Kaieda takes DPJ helm; Ozawa overture hinted 26 December 2012
  10. ^ Reuters Japan can't reject nuclear power out of hand: lawmaker 5 July 2011
Political offices
Preceded by
Seiji Maehara
Minister of Land, Infrastructure, Transport and Tourism
Succeeded by
Akihiro Ōhata
Minister of State for Okinawa and Northern Territories Affairs
Succeeded by
Yukio Edano
Preceded by
Yasushi Kaneko
Tokio Kanō
Senior Vice Minister of Land, Infrastructure, Transport and Tourism
Served alongside: Kiyomi TsujimotoTaizō Mikazuki
Succeeded by
Wakio Mitsui
Shūji Ikeguchi
House of Representatives of Japan
Preceded by
Masahiro Morioka
Representative for Nara 1st district

Media related to Sumio Mabuchi at Wikimedia Commons