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Atsumi & Sakai

Atsumi & Sakai  

Legal Services | Japan

tel: +81 3 5501 2111 | fax: +81 3 5501 2211
Fukoku Seimei Bldg. (Reception: 16F) | Tokyo | 100-0011 | Japan

Main Contacts


Tokyo, Japan | London, England | Frankfurt, Germany

Atsumi & Sakai's Overview

Atsumi & Sakai is a multi-award-winning, independent Tokyo law firm, and has been referred to as one of Japan’s “Big five” law firms. It was the first Japanese law firm to create a foreign law joint venture, which enables it to admit foreign partners and so offer its clients the quality of service that the modern international business community demands. Expanding from its highly regarded finance practice, the firm now acts for a wide range of international and domestic companies, banks, financial institutions and other businesses, offering a comprehensive range of legal expertise.

In addition to lawyers admitted in Japan (including a Japanese lawyer also admitted in England and Wales), the firm includes foreign lawyers registered in Japan to advise on the laws of the US States of New York and California, the People’s Republic of China, India, the State of Queensland, Australia, US and Australian Federal laws, and the laws of the Federal Republic of Germany (in collaboration with Janssen Foreign Law Office). Lawyers at Atsumi & Sakai not only have significant experience in conducting business in Japanese and English, but also in German, Chinese, Korean, Hindi, Marathi, Russian and Vietnamese.

  • Year this Office was Established: 1994
  • Number of Offices Worldwide: 3
  • Lawyers Worldwide: 157

Languages: Japanese, English, German, Chinese, Korean, Russian, Vietnamese, Hindi and Marathi


Areas of Practice
  • Agriculture/Forestry/Fisheries
  • Asset Finance/Structured Finance
  • Banking & Finance
  • Business Rehabilitation/Bankruptcy
  • Capital Markets
  • Competition/Antitrust
  • Corporate
  • Cross Border Labor and Employment
  • Dispute Resolution
  • Employment/Labor
  • Fintech
  • Funds
  • Infrastructure/Energy/Natural Resources
  • Innovation
  • Insurance
  • Intellectual Property
  • International Arbitration
  • International Trade
  • International Transactions
  • Investment Funds
  • IT/Security
  • Life Sciences/Healthcare
  • Media/Telecommunications
  • Mergers & Acquisitions
  • PPP/PFI/Public Procurement
  • Project Finance
  • Real Estate/Construction
  • Regional Revitalization
  • Risk Management/Scandals
  • Sports
  • Tax/Public and Administrative Law
  • White Collar Crime/Criminal Cases


Hiroo Atsumi

Hiroo AtsumiManaging Partner

Toyoki Emoto

Toyoki EmotoSenior Partner

Guohui Fan

Guohui FanSenior Partner

Shintaro Hamasu

Shintaro HamasuSenior Partner

Eiichiro Hata

Eiichiro HataSenior Partner

Masataka Hayakawa

Masataka HayakawaSenior Partner

Michiaki Hosoi

Michiaki HosoiSenior Partner

Keita Imaizumi

Keita ImaizumiSenior Partner

Shuji Koyama

Shuji KoyamaSenior Partner

Hiroki Mori

Hiroki MoriSenior Partner

Hiroyuki Nezu

Hiroyuki NezuSenior Partner

Miho Niunoya

Miho NiunoyaSenior Partner

Ryuichi Nozaki

Ryuichi NozakiSenior Partner

Junko Ogushi

Junko OgushiSenior Partner

Fumiko Oikawa

Fumiko OikawaSenior Partner

Miki Ono

Miki OnoPartner

Yutaka Sakai

Yutaka SakaiSenior Partner

Yuri Suzuki

Yuri SuzukiSenior Partner

Teruhisa Toyama

Teruhisa ToyamaSenior Partner

Kazutomo Ueyama

Kazutomo UeyamaSenior Partner

Setsuko Yufu

Setsuko YufuSenior Partner


Of Counsel

Feng Chen

Feng Q ChenOf Counsel

Go Fujimoto

Go FujimotoOf Counsel

Ryuko Inoue

Ryuko InoueOf Counsel

Kentaro Mano

Kentaro ManoOf Counsel

Kohei Murakawa

Kohei MurakawaOf Counsel

Stephen Price

Stephen PriceOf Counsel

Akira Shimazaki

Akira ShimazakiOf Counsel

Yutaka Suzuki

Yutaka SuzukiOf Counsel

Daisuke Suzuki

Daisuke SuzukiOf Counsel

Chie Tabata

Chie TabataOf Counsel

Emi Uchida

Emi UchidaOf Counsel



Atsumi & Sakai Announces Establishment of New York Office
Atsumi & Sakai, March 2021

Award-winning Japanese law firm Atsumi & Sakai is pleased to announce the establishment of an office in New York (Formal name: Atsumi & Sakai New York LLP), which will enable the firm to provide more convenient legal services in North and South America. The New York office will be led by Bonnie L. Dixon, a veteran partner of the firm and the first non-Japanese lawyer to be a partner of a Japanese law firm in the post-war era. As the only Japanese law firm with offices in London and New York, an affiliated office in Frankfurt and an affiliated law firm in Vietnam, we cover all time zones and provide legal services literally 24 hours a day...

Atsumi & Sakai is Announces Award Recipients at Asian Legal Business Japan Law Awards 2019
Atsumi & Sakai, July 2019

Asian Legal Business Japan Law Awards 2019 Atsumi & Sakai is pleased announce its receipt of the following awards at the recent Asian Legal Business Japan Law Awards 2019: • Hiroo Atsumi: Managing Partner of the Year • Atsumi & Sakai: Overseas Practice Law Firm of the Year

All press submitted by Atsumi & Sakai

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