Law firms in Japan

Abe, Ikubo & Katayama

Japan

Abe, Ikubo & Katayama (AIK) is a Japan-based law firm founded in 1959 with more than 160 members, providing comprehensive legal services to domestic and international clients. The firm’s main office is near Tokyo Station and it maintains a branch in Fukuoka, serving a wide range of industries.

Anderson Mori & Tomotsune

Japan

Anderson Mori & Tomotsune is a law firm with offices in Osaka, Nagoya and Tokyo, Japan. The firm's web listing provides office addresses and contact details for these locations.

Aquaxis Law Office

Japan

Aquaxis Law Office is a Japan-based law firm that emphasizes a collaborative, client-focused approach and offers a broad range of services including corporate, litigation and dispute resolution, M&A, employment, intellectual property, finance, data protection, competition, consumer protection, regulatory matters, pharmaceuticals and medical devices, and support for startups and ventures. The firm lists 22 lawyers, one patent attorney and nine paralegals/staff, operates in Japanese and English, and is a member of MSI Global Alliance and the American Chamber of Commerce.

Ashurst

Australia, Belgium +17

Ashurst is a leading global law firm advising local and global corporates, financial institutions and governments across commercial law matters. It operates through an international network and combines legal, risk consulting and NewLaw capabilities to support complex multi-jurisdictional transactions, disputes and projects.

Atsumi & Sakai

Japan

Atsumi & Sakai is a multi-award-winning, independent full-service Tokyo law firm and the first Japanese firm to create a foreign law joint venture, enabling it to admit foreign partners. The firm has a strong finance practice and an outward-looking international practice with foreign lawyers qualified in multiple jurisdictions and offices in Tokyo and Fukuoka, and additional offices in London and Brussels with affiliated offices in New York and Frankfurt.

Baker McKenzie

Argentina, Australia +42

Baker McKenzie is a global law firm with offices and affiliated practices across many jurisdictions. The firm provides full-service legal advice across a broad range of cross-border and domestic matters, including corporate transactions, finance, tax, disputes, and regulatory issues.

Bird & Bird

Australia, Belgium +23

Bird & Bird is an international law firm with a sector-focused, cross-border practice serving clients in technology-driven and regulated industries. Its offices provide a range of advisory, transactional and contentious services across multiple jurisdictions.

Chuo Sogo LPC

Japan

Chuo Sogo LPC is a Japanese general practice law firm founded in 1968 with around 70 lawyers and offices in Osaka, Tokyo and Kyoto. The firm provides a comprehensive range of transactional, corporate and litigation services to domestic and international clients, with expertise across corporate and commercial law, M&A, banking and finance, insurance, intellectual property, data privacy and compliance.

City-Yuwa Partners

Japan

City-Yuwa Partners is one of the leading law firms in Japan, with more than 206 fully qualified Japanese lawyers (as of January 1, 2026), two registered foreign attorneys, four foreign attorneys, and other professional staff including judicial scriveners and an immigration law specialist. The firm advises on virtually all aspects of international and domestic business and transactions, including corporate and commercial matters, finance and banking, capital markets, structured finance, mergers and acquisitions, real estate, bankruptcy and restructuring, tax, immigration and personal data protection.

Clifford Chance

Australia, Belgium +20

Clifford Chance is a global law firm with offices across Europe, the Americas, Asia Pacific, the Middle East, and Africa. The firm provides integrated legal services across multiple practice areas, including antitrust and capital markets, and in China notes a joint operation providing PRC and international legal services.

DLA Piper Argentina

Argentina, Australia +41

DLA Piper Argentina is a full-service law firm in Buenos Aires that advises domestic and multinational clients, including transnational investors and financial institutions. It is part of DLA Piper’s global platform and Latin America network, providing cross-border legal services across the region and beyond.

Greenberg Traurig

China, Germany +11

Greenberg Traurig is a global law firm with offices across the United States, Europe, the Middle East, Latin America, and Asia. Its offices provide multidisciplinary legal services spanning transactions, disputes, regulatory matters, and sector-focused advice.

Hiratsuka & Co is a Japanese law firm with nearly 40 years' history, recognised for its maritime practice and maritime dispute resolution, and for advising on shipping, insurance and reinsurance matters. The firm represents owners, charterers, P&I clubs and underwriters and works in close liaison with international law firms in multiple jurisdictions.

Hiroe & Associates is a Japan-based intellectual property firm founded by Takenori Hiroe in 1979. The firm provides a full range of IP services—including patent prosecution, litigation, trademarks, designs, searches, translations, enforcement and licensing—and serves clients domestically and internationally.

Hogan Lovells International LLP

Belgium, Brazil +19

Hogan Lovells International LLP is a global law firm with offices across Europe, Asia, the Middle East, Africa, Latin America, and the United States. The firm focuses on cross-border and regulatory matters across a wide range of sectors, with local offices providing services in areas such as corporate, finance, disputes, intellectual property, and regulatory work.

Iwata Godo

Japan

Iwata Godo, established in 1902, is a long-standing full-service Japanese law firm with offices in Tokyo and Hokkaido and more than 100 attorneys. The firm advises a broad client base including major Japanese corporations (including many Nikkei 225 companies), financial institutions, foreign multinationals and SMEs across corporate, finance, dispute resolution and sector-specific matters.

Jones Day

Australia, Belgium +15

Jones Day is a global law firm with more than 2,400 lawyers in 40 offices across five continents. The firm describes itself as an institutional partner focused on client service, collaboration across offices and practices, and multidisciplinary advice across jurisdictions.

K&L Gates

Australia, Belgium +13

K&L Gates is a global law firm with offices across Europe, Asia-Pacific, the Middle East, and the United States. The firm provides integrated, cross-border legal services across a wide range of business law matters, including corporate, disputes, regulatory, finance, and sector-focused work.

Kaynex Law Offices

Japan

Kaynex Law Offices, established in January 2016, is a Japan-based firm formed by lawyers with extensive experience at leading domestic and international law firms. The firm provides high-quality legal services across a broad range of areas—including finance, M&A, real estate, general corporate, employment and disputes—and serves clients from listed companies and financial institutions to funds, startups and individual investors.

King & Spalding

Australia, Belgium +9

King & Spalding is an international law firm serving a broad client base across more than 160 countries. The firm has 1,300 lawyers in 26 offices globally and describes its work as focused on complex business interests and tailored commercial solutions.

Kojima Law Offices is a law firm based in Tokyo, Japan. The firm is listed as a member of Mackrell International.

Linklaters

Belgium, Brazil +18

Linklaters is a leading global law firm with offices across Europe, the Middle East, Asia, and the United States. Its locations provide integrated cross-border advice across a broad range of transactional, regulatory, and disputes practices.

M. Ide & Co.

Japan

M. IDE & Co. is a Tokyo-based firm specializing in counsel and representation for the procurement of patents, trademarks and other intellectual property rights. Founded in 1995 by Masatake Ide, the firm has expertise in chemical and biochemical IP matters and advises Japanese and international clients on global IP procurement.

Mayer Brown

Belgium, Brazil +7

Mayer Brown is an international law firm with offices in multiple jurisdictions across Europe, Asia, the Middle East, and the United States. In Brazil, it operates through Tauil & Chequer Advogados in association with Mayer Brown; in Singapore it operates through Mayer Brown PK Wong Pte. Ltd., a joint law venture.