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木原 誠二
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木原 誠二

きはら せいじ

KIHARA Seiji

衆議院議員Member of the House of Representatives

自民党衆議院· House of Representatives東京20· Tokyo 20th District自由民主党・無所属の会· Liberal Democratic Party and Association of Independents7 terms

Born 1970-06-08 · 東京都 (Tokyo)

Policy issues

Career & history

Government Posts

  1. Aug 10, 2022内閣官房副長官に留任(第2次岸田改造内閣)[1][2][3]
    Reappointed as Deputy Chief Cabinet Secretary (Second Kishida Reformed Cabinet)
  2. Oct 4, 2021内閣官房副長官および内閣総理大臣補佐官に就任(第1次岸田内閣)[1][2][3][4][5]
    Appointed as Deputy Chief Cabinet Secretary and Special Advisor to the Prime Minister (First Kishida Cabinet)
  3. Oct 9, 2015外務副大臣に就任(第3次安倍改造内閣)[1][2][3][4][5]
    Appointed as State Minister for Foreign Affairs (Third Abe Reformed Cabinet)
  4. Sep 30, 2013外務大臣政務官に就任(第2次安倍内閣)[1][2][3][4][5]
    Appointed as Parliamentary Vice-Minister for Foreign Affairs (Second Abe Cabinet)

Party Posts

  1. ~ 2025自由民主党日本成長戦略本部幹事長に就任[1][2][3]
    Appointed as Secretary-General of the Japan Growth Strategy Headquarters, Liberal Democratic Party
  2. Nov 15, 2024自由民主党選挙対策委員長に就任[1][2][3][4]
    Appointed as Chairperson of the Election Strategy Committee, Liberal Democratic Party
  3. Sep 13, 2023自由民主党幹事長代理兼政調会長特別補佐に就任[1][2][3][4]
    Appointed as Deputy Secretary-General and Special Advisor to the Chairperson of the Policy Research Council, Liberal Democratic Party
  4. Oct 2018自由民主党情報調査局長に就任[1][2][3]
    Appointed as Director of the Information Bureau, Liberal Democratic Party
  5. Aug 2017自由民主党政務調査会副会長兼事務局長に就任[1][2][3]
    Appointed as Deputy Chairperson and Director General of the Policy Research Council, Liberal Democratic Party

Committee Chairs

  1. Oct 26, 2020衆議院内閣委員長に就任[1][2][3][4]
    Appointed as Chairperson of the Committee on Cabinet, House of Representatives
  2. Sep 2014衆議院議院運営委員会理事に就任[1][2][3][4]
    Appointed as Director of the Committee on Rules and Administration, House of Representatives

Professional Career

  1. Nov 2009政策研究大学院大学研究員、縄文アソシエイツ・コンサルタントとして活動[1][2][3]
    Worked as a Research Fellow at the National Graduate Institute for Policy Studies and a Consultant at Jomon Associates
  2. Jul 2005岩見沢税務署長に就任[1]
    Appointed as Director of Iwamizawa Tax Office
  3. Jul 2003財務省国際局課長補佐に就任[1][2]
    Appointed as Assistant Principal, International Bureau, Ministry of Finance
  4. Jul 2001財務省大臣官房課長補佐に就任[1][2]
    Appointed as Assistant Principal, Minister's Secretariat, Ministry of Finance
  5. Jul 1999英国大蔵省に日本人初の職員として出向[1][2][3][4][5]
    Seconded to HM Treasury (UK) as the first Japanese official
  6. Jul 1997大蔵省主計局法規課に配属[1][2]
    Assigned to the Legal Division, Budget Bureau, Ministry of Finance
  7. Apr 1993大蔵省(現 財務省)に入省[1][2][3][4][5]
    Joined the Ministry of Finance (formerly Ministry of the Treasury)
  8. Apr 1993大蔵省証券局証券業務課に配属[1][2]
    Assigned to the Securities Business Division, Securities Bureau, Ministry of Finance

Education

  1. Jul 1995英国ロンドン・スクール・オブ・エコノミクス(LSE)へ留学(修士課程修了)[1][2][3][4]
    Studied abroad at the London School of Economics and Political Science (LSE), completing a Master's degree
  2. Mar 1993東京大学法学部を卒業[1][2][3][4]
    Graduated from the Faculty of Law, the University of Tokyo
  3. Apr 1989東京大学文科Ⅰ類に入学[1][2]
    Entered the University of Tokyo, Humanities I

Publications

  1. Feb 2002『英国大蔵省から見た日本』を文春新書より刊行[1][2]
    Published "Japan from the Perspective of HM Treasury" from Bunshun Shinsho

Awards

  1. May 2016モンゴル国より「北斗七星勲章」を受章[1]
    Awarded the "Order of the Polar Star" from Mongolia

Other

  1. Feb 2026第51回衆議院議員総選挙にて当選(7期目)[1][2][3][4]
    Elected to the House of Representatives in the 51st General Election (7th term)
  2. Oct 27, 2024第50回衆議院議員総選挙にて当選(6期目)[1][2]
    Elected to the House of Representatives in the 50th General Election (6th term)
  3. Oct 31, 2021第49回衆議院議員総選挙にて当選(5期目)[1][2]
    Elected to the House of Representatives in the 49th General Election (5th term)
  4. Oct 22, 2017第48回衆議院議員総選挙にて当選(4期目)[1][2]
    Elected to the House of Representatives in the 48th General Election (4th term)
  5. Dec 14, 2014第47回衆議院議員総選挙にて当選(3期目)[1][2][3]
    Elected to the House of Representatives in the 47th General Election (3rd term)
  6. Dec 16, 2012第46回衆議院議員総選挙にて当選(2期目)[1][2][3]
    Elected to the House of Representatives in the 46th General Election (2nd term)
  7. Sep 11, 2005第44回衆議院議員総選挙にて初当選[1][2][3][4][5]
    First elected to the House of Representatives in the 44th General Election
  8. Jun 8, 1970東京都に生まれる[1][2][3][4][5]
    Born in Tokyo

Elections

ElectionDateConstituencyPartyResultVotesRateSource
第51回衆議院議員選挙 2026年
51st House of Representatives election 2026
2026-02-08
東京20区
Tokyo 20th District
自由民主党
Liberal Democratic Party
Elected108,98548.60%
第50回衆議院議員選挙 2024年
50th House of Representatives election 2024
2024-10-27
東京20区
Tokyo 20th District
自由民主党
Liberal Democratic Party
Elected93,39043.00%
第49回衆議院議員選挙
49th House of Representatives election
2021-10-31
東京20区
Tokyo 20th District
自由民主党
Liberal Democratic Party
Elected121,62152.60%
第48回衆議院議員選挙
48th House of Representatives election
2017-10-22
東京20区
Tokyo 20th District
自由民主党
Liberal Democratic Party
Elected107,68649.90%
第47回衆議院議員選挙
47th House of Representatives election
2014-12-14
東京20区
Tokyo 20th District
自由民主党
Liberal Democratic Party
Elected110,27352.10%
第46回衆議院議員選挙
46th House of Representatives election
2012-12-16
東京20区
Tokyo 20th District
自由民主党
Liberal Democratic Party
Elected98,07040.40%
第45回衆議院議員選挙
45th House of Representatives election
2009-08-30
東京20区
Tokyo 20th District
自由民主党
Liberal Democratic Party
95,718
第44回衆議院議員選挙
44th House of Representatives election
2005-09-11
東京20区
Tokyo 20th District
自由民主党
Liberal Democratic Party
Elected112,634

Committee memberships

常任委員会· Standing Committee

  • 決算行政監視委員会
    Audit and Oversight of Administration
    委員· Member
  • 法務委員会
    Committee on Judicial Affairs
    委員· Member

Offices

Diet Office

衆議院第一議員会館
衆議院第一議員会館
Room
915
Fax
03-3508-3719

東村山事務所

東京都東村山市栄町2-22-3 四方田ビル1階
1F Yomoda Building, 2-22-3 Sakaemachi, Higashimurayama-shi, Tokyo
Fax
042-392-4106

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