2. About Us



About Our Firm

Okuno & Partners is a full-service independent business law firm that mainly specializes in commercial dispute resolution – mediation and litigation; corporate and finance; mergers and acquisitions; and IT and Fintech. It also has a highly regarded restructuring and insolvency practice.

The firm, which was established in 1924, has been advising and representing international organizations, multinational corporations, financial institutions, small and medium-sized companies, and individuals from around the world for close to a century. During this time, it has built up an excellent reputation in both the domestic and international markets by delivering prompt, clear, and cost-effective solutions. It has an extensive network of business, accounting and tax professionals in Japan, and is able to provide clients with comprehensive solution and act as one-stop-shop.

In the international sphere, we have handled cases based on the principle that cooperation and coexistence between Japanese and foreign companies is important. We are well-known for our expertise in corporate advisory services, and cross-border transactions. Our lawyers have a wealth of experience in representing foreign clients before domestic courts and authorities. One of the most notable cases it has handled was the restructuring of a giant Japanese leasing company, in which it negotiated the transfer of its business to General Electric. Please see our EXPERTISE page for other cases we have handled. As part of our commitment to quality, Okuno & Partners became a member of Alliance of Business Lawyers (ABL) to broaden and strengthen its global network. ABL is a global network of leading business law firms, giving our lients access to fast, accurate, and reliable advice from anywhere around the world.

Our membership of ABL ensures that we can offer added value to our clients by referring them to reputable foreign business law firms that provide a comparable level of service. All member firms are broad-based corporate law practices with litigation capabilities. Like us, our partners have English-speaking lawyers and embrace and use the latest technologies.

Our International Desk is administered by Ms. Masako BANNO and Mr. Hidetomo OMIZU, who between them have decades of experience in cross-border business.

For a list of member firms and international legal updates please visit


ADDRESS Kyobashi TD Bldg. 8F
1-2-5 Kyobashi, Chuo-ku, Tokyo, 104-0031, Japan
TEL +81-(0)3-3274-3807
  • 5-minutes walk from JR Tokyo Station, Yaesu Central Gate
  • 3-minutes walk from Tokyo Metro Ginza Line Kyobashi Station, Exit 7
  • 5-minutes walk from Tokyo Metro Tozai Line Nihombashi Station, Exits B1 and B3
  • 7-minutes walk from Toei Asakusa Line Takaracho Station, Exit A6