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山田 吉彦
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山田 吉彦

やまだ よしひこ

YAMADA Yoshihiko

政務調査会 政務調査会副会長 · 政務調査会Vice Chair of the Policy Research Council

国民民主参議院· House of Councillors比例· Proportional Representation国民民主党・新緑風会· Democratic Party For the People and The Shin-Ryokufukai1 term

Born 1962-09-07 · 千葉県千葉市 (Chiba City, Chiba Prefecture)

Policy issues

Current positions

Party Positions

  • 政務調査会 政務調査会副会長
    Vice Chair of the Policy Research Council
  • 安全保障調査会長
    Chair of the Research Commission on Security

Career & history

Government Posts

  1. Jul 1, 2012東京都専門委員(尖閣諸島担当)に就任[1][2]
    Appointed as a Special Member of the Tokyo Metropolitan Government (In charge of Senkaku Islands)
  2. Dec 19, 2011国土交通省海洋政策懇談会委員に就任[1][2][3]
    Appointed as a member of the Maritime Policy Consultative Council of the Ministry of Land, Infrastructure, Transport and Tourism

Party Posts

  1. Sep 16, 2025国民民主党安全保障調査会長に就任[1][2][3][4][5]
    Appointed Chairperson of the National Security Research Commission of the Democratic Party for the People

Professional Career

  1. Oct 1, 2025東海大学海洋学部客員教授に就任[1][2][3]
    Appointed Visiting Professor at the School of Marine Science and Technology, Tokai University
  2. Apr 2019東海大学学長補佐・静岡キャンパス長に就任[1][2][3][4][5]
    Appointed Executive Assistant to the President and Head of the Shizuoka Campus, Tokai University
  3. 2009東海大学教授に就任[1][2][3][4]
    Appointed Professor at Tokai University
  4. 2008東海大学海洋学部准教授に就任[1][2]
    Appointed Associate Professor at the School of Marine Science and Technology, Tokai University
  5. 1991財団法人日本船舶振興会(現・日本財団)に勤務(海洋船舶部長、海洋グループ長を歴任)[1][2][3][4][5][6][7]
    Joined the Japan Shipbuilding Industry Foundation (now The Nippon Foundation); Served as Director of Ocean and Maritime Department and Head of the Maritime Group
  6. Apr 1986東洋信託銀行に入行(都市開発、債券トレーディングを担当)[1][2][3][4][5][6][7]
    Joined Toyo Trust and Banking Co., Ltd. (Assigned to urban development and bond trading)

Education

  1. Mar 2008埼玉大学大学院経済科学研究科博士課程を修了(博士(経済学)取得)[1][2][3][4][5][6]
    Completed the Doctoral program at the Graduate School of Economic Science, Saitama University (Obtained Ph.D. in Economics)
  2. Mar 2003多摩大学大学院経営情報学研究科修士課程を修了[1][2]
    Completed the Master's program at the Graduate School of Management and Information Sciences, Tama University
  3. Mar 1986学習院大学経済学部を卒業[1][2][3][4][5][6][7]
    Graduated from the Faculty of Economics, Gakushuin University

Publications

  1. Jun 2025『ニッポンの国益を問う 海洋資源大国へ』を産経新聞出版より刊行[1]
    Published 'Questioning Japan's National Interests: Towards a Maritime Resource Superpower' from Sankei Shimbun Shuppan
  2. May 2022『日本の領土と国境 尖閣・竹島・北方四島問題を解決する』を扶桑社より刊行[1]
    Published 'Japan's Territory and Borders: Solving the Senkaku, Takeshima, and Northern Territories Issues' from Fusosha
  3. May 2021『新世界 海賊の作法』をジー・ビーより刊行[1]
    Published 'The New World: Pirate Etiquette' from G.B.
  4. Aug 2019『日本の海が盗まれる』を文春新書より刊行[1]
    Published 'Japan's Seas are Being Stolen' from Bunshun Shinsho
  5. Jul 26, 2016『ONE PIECE勝利学』を集英社インターナショナルより刊行[1]
    Published 'The Winning Philosophy of ONE PIECE' from Shueisha International
  6. Mar 2016『完全図解 海から見た世界経済』をダイヤモンド社より刊行[1]
    Published 'Complete Illustrated Guide: The Global Economy Seen from the Sea' from Diamond, Inc.
  7. Aug 2014『国境の人々 再考・島国日本の肖像』を新潮社より刊行[1]
    Published 'People of the Borders: Rethinking the Portrait of Island Nation Japan' from Shinchosha
  8. 2014『侵される日本 我々の領土・領海を守るために何をすべきか』をPHP研究所より刊行[1]
    Published 'Invaded Japan: What Must Be Done to Protect Our Territory and Waters' from PHP Institute
  9. Dec 2013『解決!すぐわかる日本の国境問題』を海竜社より刊行[1]
    Published 'Solution! Quickly Understand Japan's Border Issues' from Kairyusha
  10. Oct 2012『日本全国お魚事典』を海竜社より刊行[1]
    Published 'Encyclopedia of Fish Across Japan' from Kairyusha
  11. Apr 2012『驚いた! 知らなかった 日本国境の新事実』を実業之日本社より刊行[1]
    Published 'Surprise! Unknown Facts about Japan's Borders' from Jitsugyo no Nihon Sha
  12. Jul 2011『日本国境戦争』をソフトバンク クリエイティブより刊行[1]
    Published 'Japan's Border War' from SoftBank Creative
  13. Feb 2011『海洋資源大国 日本は「海」から再生できる』を海竜社より刊行[1]
    Published 'Maritime Resource Superpower: Japan Can Rebuild from the Sea' from Kairyusha
  14. Oct 2010『日本は世界4位の海洋大国』を講談社+α新書より刊行[1]
    Published 'Japan is the World's Fourth Largest Maritime Nation' from Kodansha +α Shinsho
  15. Aug 2009『海の政治経済学』を成山堂書店より刊行[1]
    Published 'The Political Economy of the Sea' from Seizando Shoten
  16. Aug 10, 2006『海賊の掟』を新潮新書より刊行[1]
    Published 'The Pirate Code' from Shincho Shinsho
  17. Mar 2005『日本の国境』を新潮社より刊行[1]
    Published 'Japan's Borders' from Shinchosha
  18. Oct 2003『海のテロリズム 工作船・海賊・密航船レポート』をPHP新書より刊行[1]
    Published 'Maritime Terrorism: A Report on Spy Ships, Pirates, and Stowaway Ships' from PHP Shinsho
  19. Mar 2003『天気で読む日本地図 各地に伝わる風・雲・雨の言い伝え』をPHP研究所より刊行[1]
    Published 'Reading the Map of Japan through Weather' from PHP Institute

Awards

  1. 2023全国離島振興協議会より会長特別表彰を受賞[1][2][3][4]
    Received the Chairperson's Special Commendation from the National Council for the Development of Remote Islands
  2. 2014第15回「正論新風賞」を受賞[1][2][3][4]
    Awarded the 15th Seiron Shinpu Award
  3. 1999第3回海洋文学大賞において佳作入選[1][2][3][4]
    Won an Honorable Mention at the 3rd Marine Literature Awards

Other

  1. Dec 21, 2025NHK『日曜討論』に党安全保障調査会長として出演[1][2][3]
    Appeared on NHK's 'Sunday Discussion' as the Chairperson of the party's National Security Research Commission
  2. Jul 20, 2025第27回参議院議員通常選挙において比例代表選出で当選[1][2][3][4][5][6]
    Elected to the House of Councillors in the 27th regular election via proportional representation
  3. Sep 7, 1962千葉県千葉市に生まれる[1][2][3][4][5][6][7][8]
    Born in Chiba City, Chiba Prefecture

Elections

ElectionDateConstituencyPartyResultVotesRateSource
第27回参議院議員選挙 2025年 比例区全国比例区
27th House of Councillors election 2025 nationwide proportional representation
2025-07-20
PR only
国民民主党
Democratic Party for the People
Elected

Committee memberships

審査会· Deliberative Council

  • 憲法審査会
    Commission on the Constitution
    委員· Member

常任委員会· Standing Committee

  • 国家基本政策委員会
    Committee on Fundamental National Policies
    委員· Member
  • 外交防衛委員会
    Committee on Foreign Affairs and Defense
    委員· Member

特別委員会· Special Committee

  • 沖縄・北方問題及び地方に関する特別委員会
    Special Committee on Okinawa and Northern Problems as well as Regional Issues
    委員· Member

Offices

Diet Office

参議院議員会館
参議院議員会館
Room
1112
Fax
03-6551-1112

東京事務所

東京都港区新橋2-20-15 新橋駅前ビル1号館4階フィルポート内
4F Philport, Shimbashi Ekimae Building No.1, 2-20-15 Shimbashi, Minato-ku, Tokyo

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