LAWYER PROFILE
Hironobu Tsukamoto

Hironobu Tsukamoto

Global 2026

Chambers ranking badge
Share profile
Chambers ranking badge
Nagashima Ohno & Tsunematsu
 Nagashima Ohno & Tsunematsu

Ranked in 2 practice areas

Litigation

USA

11 years ranked

Dispute Resolution

Japan

11 years ranked

About

Provided by Nagashima Ohno & Tsunematsu

Global

Practice Areas

Dispute resolution, labor and employment, intellectual property, crisis management and compliance, international trade.

Career

Admitted in Japan (2000) and in New York (2006); Joined Nagashima Ohno & Tsunematsu in 2000; Became a Partner of Nagashima Ohno & Tsunematsu in 2009; Seconded to Weil, Gotshal & Manges (Silicon Valley)(2005-2007); Became a Partner of Nagashima Ohno & Tsunematsu NY LLP in 2015

Professional Memberships

Dai-ichi Tokyo Bar Association, International Bar Association, American Bar Association, New York State Bar Association.

Publications

"Guide to Workplace Investigatinos-Japan" 2025, International Employment Lawyer (Co-author), "Lexology In-Depth: Employment Law-Edition 16 Japan" 2025, Law Business Research Ltd (Co-author), "Lexology Getting the Deal Through - Labour & Employment 2023 Japan" 2023, Law Business Research Ltd (Co-author) "The Banking Litigation Law Review - Edition 4 JAPAN" 2021, Law Business Research Ltd (Co-author)"Getting the Deal Through - Appeals 2019 Japan" 2019, Law Business Research Ltd (Co-author), “The International Comparative Legal Guide to: Enforcement of Foreign Judgments (Japan)” 2016, Global Legal Group Limited (Co-author) "Social Media and Employment Law. An International Survey" 2015, Thomson Reuters (Co-author) "Arbitration World - Jurisdictional Comparisons 5th Edition 2015" Walters Kluwer (Co-author)

Personal

LLB, Kyoto University, 1998; LLM, the University of Chicago Law School, 2005.

Chambers Review

Provided by Chambers

Chambers Global Guide

Litigation - USA

Foreign expert in Japan
Individual Editorial
Hironobu Tsukamoto acts on an impressive range of civil disputes, including employment and commercial litigation, from the firm's New York office. He is a fine choice of counsel for matters involving Japanese entities, including regulatory compliance concerns.
View foreign expertise table

Dispute Resolution - Japan

Japan, expertise based abroad in USA
Individual Editorial

Hironobu Tsukamoto is based in New York and is active advising US corporates on Japan-related commercial disputes, with notable experience acting on employment and IP matters.

View expertise based abroad table

Strengths

Provided by Chambers

  • He has deep experience in both US and Japanese legal matters, which leads many US-based Japanese corporations in the right direction.

    LitigationChambers Global Guide

  • He understands the needs of his customers and responds carefully to their projects.

    LitigationChambers Global Guide

  • The very speedy and easy-to-understand explanations are appreciated. In addition, there is a high level of understanding of the position of the client company.

    LitigationChambers Global Guide

Ranked Individuals at Nagashima Ohno & Tsunematsu (30)

Japan

What success is built on

Chambers is the leading data and intelligence partner for the legal sector.

Explore thought leadership