Tatsuo Yamashima

Tatsuo Yamashima

Atsumi & Sakai

Recognized since 2020

Tokyo, Japan

Practice Areas

Antitrust / Competition Law

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  • Fukoku Seimei Building
    2-2-2 Uchisaiwaicho
    Tokyo 100-0011


  • English
  • Japanese


  • The University of Tokyo, School of Law , J.D., graduated 2004
  • The University of Tokyo, B.A., graduated 2002

Bar Admissions

  • Japan, Daini Tokyo Bar Association

Atsumi & Sakai
Headquarters: Tokyo, Japan

70 The Best Lawyers in Japan awards

1 Best Lawyers: Ones to Watch in Japan awards

Full Firm Profile

Recognized in The Best Lawyers in Japan 2023 for work in:

  • Antitrust / Competition Law


  • The Legal 500 Asia Pacific 2021 Leading Individuals - Antitrust and CompetitionChambers Asia-Pacific 2021 Leading Individual - Competition/AntitrustWho's Who Legal Japan 2020- Competitionasialaw Leading Lawyers 2021 Distinguished practitioner - Competition/antitrustWho’s Who Legal: Competition 2020 - Competition (Future Leaders)

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