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Tokyo Office

Now in its third decade, our Tokyo office has built an unsurpassed practice among U.S. law firms, offering experienced transactional lawyers with Japanese language ability. We launched a Tokyo practice in order to serve clients doing business in Japan and to counsel Japanese clients operating globally. Our lawyers in Tokyo regularly advise on many of the largest, groundbreaking deals in the market. Clients turn to us because of the high caliber of our attorneys and our deep knowledge and understanding of Japanese corporate culture – and because we put the collective knowledge of the entire Firm at work in order to help achieve their commercial goals.

Deals of the Year
Investment Fund Law Firm of the Year, Debt Market Deal of the Year, Asian Legal Business Japan Law Awards 2019, Deal of the Year (Mercari IPO), Asian-MENA Counsel’s Deals of the Year 2018; M&A Team of the Year, IPO of the Year and Securities Deal of the Year, The Asian Lawyer’s Asia Legal Awards 2016; Band 1 Ranking for Capital Markets: International: US Law by Chambers Asia-Pacific 2011-2021 (Japan)

Our Tokyo team provides both Japanese and international clients with advice that demonstrates our deep understanding of the following practice areas:

  • Capital markets (IPOs, global equity offerings, bank capital transactions and J-REITs)
  • Mergers and acquisitions
  • Cross-border private fund formation

In concert with litigators in our other offices, we also provide support to Japanese companies involved in investigations by U.S. authorities (relating to antitrust, FCPA, OFAC, etc.), complex court cases, international arbitrations and dispute resolution.

Top Ranking
Band 1 Ranking in Japan Capital Markets – Chambers Asia-Pacific 2008–2021

    News & Events




        Ark Hills Sengokuyama Mori Tower
        41st Floor
        9-10, Roppongi 1-Chome
        Minato-Ku, Tokyo 106-0032
        +81-3-5562-6202 fax

        Spotlight on
        Simpson Thacher Named “Best Law Firm” and “Best M&A Deal” for 2021 By FinanceAsia
        Spotlight on
        Simpson Thacher Named “International Deal Firm of the Year” at ALB Japan Law Awards 2021
        Spotlight on
        Simpson Thacher Named “International Law Firm of the Year” and “Securities Firm of the Year” at The Asia Legal Awards 2021
        Spotlight on
        Simpson Thacher Named 2020 “Law Firm of the Year in Asia” for Fund Formation by Private Equity International