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岡本 三成
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岡本 三成

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OKAMOTO Mitsunari

政務調査会長Chair of Policy Research Council

中道改革衆議院· House of Representatives(比)東京· Tokyo Proportional Representation Block中道改革連合・無所属· Centrist Reform Union and Independents6 terms

Born 1965-05-05 · 佐賀県鳥栖市 (Tosu City, Saga Prefecture)

Policy issues

Current positions

Party Positions

  • 政務調査会長
    Chair of Policy Research Council
  • 執行役員会構成メンバー
    Member of the Executive Board

Career & history

Government Posts

  1. Nov 2021財務副大臣に就任(第2次岸田内閣)[1][2][3][4][5]
    Appointed as State Minister of Finance (Second Kishida Cabinet).
  2. Nov 2017外務大臣政務官に再任(第4次安倍内閣)[1][2][3][4]
    Re-appointed as Parliamentary Vice-Minister for Foreign Affairs (Fourth Abe Cabinet).
  3. Aug 2017外務大臣政務官に就任(第3次安倍第3次改造内閣)[1][2][3][4][5][6]
    Appointed as Parliamentary Vice-Minister for Foreign Affairs (Third Reshuffled Third Abe Cabinet).

Party Posts

  1. Feb 2026中道改革連合の政務調査会長に就任[1][2]
    Appointed as Chairperson of the Policy Research Council of the Chudo Kaikaku Rengo (Centrist Reform Union).
  2. Sep 2024公明党政務調査会長に就任[1][2][3][4][5]
    Appointed as Chairperson of the Policy Research Council of Komeito.
  3. 2020公明党新型コロナウイルス感染症対策本部副本部長に就任[1][2]
    Appointed as Deputy Director of the COVID-19 Response Headquarters of Komeito.
  4. 2019公明党国土交通部会長に就任[1][2]
    Appointed as Director of the Land, Infrastructure, Transport and Tourism Division of Komeito.

Committee Chairs

  1. 2023衆議院経済産業委員長に就任[1][2][3][4]
    Appointed as Chairman of the Committee on Economy, Trade and Industry of the House of Representatives.
  2. Oct 2019衆議院国土交通委員会理事に就任[1][2][3][4]
    Appointed as Director of the Committee on Land, Infrastructure, Transport and Tourism of the House of Representatives.
  3. Oct 2018衆議院内閣委員会理事に就任[1][2]
    Appointed as Director of the Committee on Cabinet of the House of Representatives.
  4. Dec 2014衆議院外務委員会理事に就任[1][2][3]
    Appointed as Director of the Committee on Foreign Affairs of the House of Representatives.

Professional Career

  1. 2005ゴールドマン・サックス証券の執行役員に就任[1][2]
    Appointed as Managing Director of Goldman Sachs Japan Co., Ltd.
  2. Aug 1998ゴールドマン・サックス証券に入社[1][2][3][4][5]
    Joined Goldman Sachs Japan Co., Ltd.
  3. Apr 1989シティバンク(シティコープ証券)に勤務[1][2][3][4][5]
    Joined Citibank (Citicorp Securities).

Education

  1. May 1998米国ノースウェスタン大学ケロッグ経営大学院を修了(経営学修士号を取得)[1][2][3][4][5]
    Completed the Kellogg School of Management at Northwestern University, USA (Master of Business Administration).
  2. Mar 1989創価大学経営学部を卒業[1][2][3][4][5]
    Graduated from the Faculty of Business Administration, Soka University.
  3. 1988英国グラスゴー大学に留学[1][2][3][4]
    Studied abroad at the University of Glasgow, UK.

Other

  1. Jan 22, 2026中道改革連合の結成に参加し、入党[1][2][3]
    Participated in the formation of the Chudo Kaikaku Rengo (Centrist Reform Union) and joined the party.
  2. Jan 21, 2026公明党を離党[1]
    Left Komeito.
  3. Oct 2024第50回衆議院議員総選挙にて5期目の当選(東京29区)[1][2][3][4]
    Re-elected to the House of Representatives in the 50th general election (5th term, Tokyo 29th District).
  4. Oct 2021第49回衆議院議員総選挙にて4期目の当選(東京12区)[1][2][3][4][5]
    Re-elected to the House of Representatives in the 49th general election (4th term, Tokyo 12th District).
  5. Oct 2017第48回衆議院議員総選挙にて3期目の当選[1][2]
    Re-elected to the House of Representatives in the 48th general election (3rd term).
  6. Dec 2014第47回衆議院議員総選挙にて2期目の当選[1][2]
    Re-elected to the House of Representatives in the 47th general election (2nd term).
  7. Dec 2012第46回衆議院議員総選挙にて初当選(比例北関東ブロック)[1][2][3][4][5][6]
    First elected to the House of Representatives in the 46th general election (North Kanto Proportional Representation Block).
  8. May 5, 1965佐賀県鳥栖市に生まれる[1][2][3][4][5][6]
    Born in Tosu City, Saga Prefecture.

Elections

ElectionDateConstituencyPartyResultVotesRateSource
第51回衆議院議員選挙 2026年 比例区東京ブロック
51st House of Representatives election 2026 Proportional representation district Tokyo block
2026-02-08
PR only
中道改革連合
Centrist Reform Alliance
Elected
第50回衆議院議員選挙 2024年
50th House of Representatives election 2024
2024-10-27
東京29区
Tokyo 29th District
公明党
Komeito
Elected60,10033.20%
第49回衆議院議員選挙
49th House of Representatives election
2021-10-31
東京12区
Tokyo 12th District
公明党
Komeito
Elected101,02039.90%
第48回衆議院議員選挙 比例区北関東ブロック
48th House of Representatives election, North Kanto proportional representation block
2017-10-22
PR only
公明党
Komeito
Elected
第47回衆議院議員選挙 比例区北関東
47th House of Representatives election North Kanto proportional representation district
2014-12-14
PR only
公明党
Komeito
Elected
第46回衆議院議員選挙 比例区北関東
46th House of Representatives election, Kita-Kanto proportional representation district
2012-12-16
PR only
公明党
Komeito
Elected

Committee memberships

常任委員会· Standing Committee

  • 財務金融委員会
    Financial 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
1005
Fax
03-3508-3637

地元事務所

東京都荒川区西日暮里5-32-5 ウシオビル2階
2F Ushio Bldg., 5-32-5 Nishinippori, Arakawa-ku, Tokyo
Fax
03-5604-5924

Web & social