Hisaya Kimura
Partner

Hisaya Kimura
hisayakimura@quinnemanuel.comHisaya Kimura is a Partner in our Tokyo office. He specialises in international disputes litigation. Mr. Kimura joined the firm in 2024.
Prior to joining Quinn Emanuel, Mr. Kimura began his career as a lawyer at the offices of the late Ekizo Fujibayashi, the only lawyer in Japan to have served as Chief Justice of the Supreme Court. He then obtained his LL.M. from Harvard Law School and was admitted to the State Bar of New York State. Mr. Kimura remained at Harvard as a visiting researcher before joining Milbank, Tweed, Hadley & McCloy in New York, where he primarily worked on large international disputes for Japanese companies for the next two years.
After returning to Japan, he joined Nagashima & Ohno (now Nagashima Ohno & Tsunematsu) as an associate – and eventually making partner - where he focused on international disputes including foreign litigation, international arbitration, international mediation, and international negotiations primarily for Japanese companies. He also represented Japanese and foreign companies in Japanese courts in some of the largest and most significant litigations in Japan. Mr. Kimura was elected to his previous firm’s Management Committee a total of five terms (10 years), and was directly involved in the management of the firm and was the representative partner for the attorneys engaged in dispute resolution for many years.
Mr. Kimura has extensive experience in a wide range of disputes, including in the areas of business alliance conflicts, finance and securities, competition, environmental and pollution, IT, labor, product liability, and intellectual property.
Recent News
Quinn Emanuel Ranked by Legal 500 Asia-Pacific 2025
January 16, 2025Quinn Emanuel Ranked by Chambers Asia-Pacific 2025
December 12, 2024Practice Areas
Education
- Harvard University
(LL.M., 1990) - Waseda University
(B.A.in Law, 1983)
Admissions
- The Japanese bar
- The State Bar of New York
Languages
- Japanese
- English
Prior Associations
- Yamamoto & Takai (Fujibayashi)
- Associate, 1985-1993
- Milbank, Tweed, Hadley & McCloy
- Foreign Associate, 1991-1993
- Nagashima & Ohno (from 2000, Nagashima Ohno & Tsunematsu)
- Associate, 1993-1996
- Partner, 1996-2023
- Counsel, 2024
Awards
- Ranked by Legal 500 Asia Pacific, International firms and joint ventures, Hall of Fame, 2025
- Ranked by Chambers Asia-Pacific, Dispute Resolution: Domestic, 2025
- Ranked by Chambers Global in Dispute Resolution, 2025
- Named by Asia Business Law Journal as Japan’s Top 100 Lawyers 2024
- Ranked by The Legal 500 Asia Pacific 2024 in Dispute resolution
- Ranked by Chambers Asia-Pacific 2024 in Dispute Resolution
- Ranked by Who’s Who Legal: Global Practice Area Reports 2023 in Commercial Litigation
- Ranked by Who’s Who Legal: Japan 2023 in Commercial Litigation
- Ranked by asialaw 2023/24 in Dispute Resolution
- Named one of Asia Business Law Journal’s The A-List: Japan’s Top 100 Lawyers for 2023
- Ranked by Benchmark Litigation Asia-Pacific 2023 in Commercial and transactions - Litigation Star
- Selected for The Best Lawyers in Japan 2024, Arbitration and Mediation
- Selected for ALB Top 15 North Asia Litigators 2023
- Ranked by The Legal 500 Asia Pacific 2023 in Dispute Resolution
- Ranked by Chambers Asia-Pacific 2023 in Dispute Resolution
- Selected for Who’s Who Legal: Global Guide 2022 in Leading Practitioners - Commercial Litigation
- Selected for Who’s Who Legal: Japan in Leading Practitioners - Competition 2022
- Ranked by asialaw 2022/23 in Dispute Resolution
- Selected for Asia Business Law Journal The A-List: Japan’s Top 100 Lawyers 2022
- Selected for Benchmark Litigation Asia-Pacific: Litigation Star - Commercial and transactions 2022
- Selected for ALB Asia Super 50 Disputes Lawyers 2022
- Ranked by The Best Lawyers in Japan 2023 The Best Lawyers: Ones to Watch in Japan 2023 - Arbitration and Mediation, Corporate and Mergers and Acquisitions Law, Corporate Governance and Compliance Practice, Criminal Defense, Litigation
- Ranked by Chambers Global 2022 in Dispute Resolution
- Ranked by The Legal 500 Asia Pacific 2022 in Dispute Resolution
- Ranked by Chambers Asia-Pacific 2022 in Dispute Resolution
- Ranked by asialaw Profiles 2022, asialaw Leading Lawyers 2022 in Leading Lawyers - Dispute resolution
- Selected for Who’s Who Legal: Japan 2021 Leading Practitioners in Litigation
- Named one of Asia Business Law Journal The A-List: Japan’s Top 100 Lawyers 2021
- Selected for Benchmark Litigation Asia-Pacific 2021, Litigation Star - Commercial and transactions
- Selected for The Best Lawyers in Japan 2022 Arbitration and Mediation
- Ranked by Chambers Global 2021 in Dispute Resolution
- Ranked by The Legal 500 Asia Pacific 2021 in Dispute resolution: Hall of fame
- Ranked by Chambers Asia-Pacific 2021 in Dispute Resolution
- Selected for Who’s Who Legal: Japan 2020 Leading Practitioners in Litigation
- Ranked by Asialaw Profiles 2021,Asialaw Leading Lawyers 2021 in Leading Lawyers - Dispute resolution
- Selected for Benchmark Litigation Asia-Pacific 2020, Dispute Resolution Star in Commercial and transactions
- Selected for The Best Lawyers in Japan, Arbitration and Mediation 2021
- Ranked by Chambers Global 2020 in Dispute Resolution
- Ranked by Legal 500 Asia Pacific 2020 in Dispute Resolution
- Ranked by Chambers Asia-Pacific 2020 in Dispute Resolution
- Selected for Who’s Who Legal: Japan 2019 Leading Practitioners in Litigation
- Selected for Benchmark Litigation Asia-Pacific 2019, Dispute Resolution Star in Commercial and Transactions
- Named The Best Lawyers in Japan for Criminal Defense 2019
- Ranked by Chambers Global 2019 in Dispute Resolution
- Ranked by The Legal 500 Asia Pacific 2019 in Dispute Resolution
- Ranked by Chambers Asia-Pacific 2019 in Dispute Resolution
- Ranked by Who’s Who Legal: Japan 2018 in Competition
- Ranked by Benchmark Litigation Asia-Pacific 2018 in Commercial and Transactions
- Named The Best Lawyers in Japan for Criminal Defense 2019
- Ranked by Chambers Global 2018 in Dispute Resolution
- Ranked by Chambers Asia-Pacific 2018 in Dispute Resolution
- Ranked by Legal 500 Asia Pacific 2018 in Dispute Resolution
- Ranked by Who’s Who Legal: Japan 2017 in Business Crime Defense & Investigations
- Ranked by Chambers Global 2017 in Dispute Resolution
- Named The Best Lawyers in Japan 2018 in Litigation
- Ranked by Chambers Asia-Pacific in Dispute Resolution 2017
- Ranked by The Legal 500 Asia Pacific 2017 in Dispute resolution (Tier 1)
- Ranked by Chambers Global 2016 in Dispute Resolution
- Named The Best Lawyers in Japan 2017 in Litigation
- Ranked by Chambers Asia-Pacific 2016 in Dispute Resolution (Band 1)
- Ranked by Legal 500 Asia Pacific 2016 in Dispute Resolution (Tier 1)
- Named The Best Lawyers in Japan 2016 in Litigation
- Ranked by Chambers Global 2015 in Dispute Resolution (Band 2)
- Ranked by Chambers Asia-Pacific 2015 in Dispute Resolution (Band 2)
- Ranked by The Legal 500 Asia Pacific 2015 in Dispute resolution (Tier 1)
- Named The Best Lawyers in Japan (5th edition) in Litigation 2014
- Named as a Recommended Lawyer by Asialaw Profiles 2015
- Named a Local Disputes Star by Benchmark Asia-Pacific 2014(ADR/Litigation)
- Ranked by Chambers Global 2014 in Dispute Resolution (Band 1)
- Ranked by Chambers Asia-Pacific 2014 in Dispute Resolution (Band 1)
- Named as a Recommended Lawyer by The Asia Pacific Legal 500 2014
- Named as a Recommended Lawyer by Asialaw Profiles 2014
- Named a Local Disputes Star by Benchmark Asia-Pacific 2013(ADR/Litigation)
- Named The Best Lawyers 2013 in Litigation
- Ranked by Chambers Global 2013 in Dispute Resolution (Band 1)
- Ranked by Chambers Asia-Pacific 2013 in Dispute Resolution (Band 1)
- Ranked by The Asia Pacific Legal 500 2013 in Dispute resolution (Tier 1)
- Named as a Recommended Lawyer by Asialaw Profiles 2013
- Ranked by “PLC Which lawyer?” In Dispute resolution 2012
- Named The Best Lawyers 2012 in Litigation
- Ranked by Chambers Global 2012 in Dispute Resolution (Band 1)
- Ranked by Chambers Asia-Pacific 2012 in Dispute Resolution (Band 1)
- Ranked by The Asia Pacific Legal 500 2012 in Dispute resolution (Tier 1)
- Ranked by Asialaw Profiles 2012 in Laboure & Employment (Tier 2)
- Ranked by Chambers Asia 2011 in Dispute Resolution (Band 1)
- Ranked by Chambers Global 2011 in Dispute Resolution
- Ranked by The Asia Pacific Legal 500 2010/2011 in Dispute resolution (Tier 1)
- Named The Best Lawyers 2010 in Litigation
Publications and Lectures
- Co-Hosted Seminars between Nagashima Ohno & Tsunematsu and Quinn Emanual Urquhart & Sullivan (2015)
- Civil Procedure in Japan (Revised Second Edition), Juris Publishing (2002)
Professional Activities
- Fellow, International Academy of Trial Lawyers
- Visiting Researcher, Harvard Law School (1990-1991)