Miho Niunoya

Atsumi & Sakai - Japan

Senior Partner


+81 3 5501 1163

Highly regarded


Bar admissions:




Practice areas:

Project development
Project finance

Industry sectors:

Construction and materials
Government and public policy
Real estate
Social infrastructure

Miho has more than 20 years’ experience advising on PFI/PPP and construction projects in the infrastructure and energy sectors, and is recognised as a leading practitioner. She has also been actively assuming public roles such as serving as a member of expert committees and audit committees of national government and local government authorities, and by serving as a member of a mediation board.

Atsumi & Sakai actively promotes the involvement of female attorneys with over 20% of our partners being women. Our considerable efforts from an early stage to introduce and develop maternity leave and childcare leave, supporting systems to encourage women to return to work, as well as a policy to prevent sexual and power harassment, have led to the creation of a healthy workplace culture where employees can work with peace of mind regardless of gender.

Recognizing this, in 2015 the firm received the Family Friendly Award from the Daini Tokyo Bar Association and has been named as an Employer of Choice (one of Asia’s best law firms to work for) in Japan by Asian Legal Business (ALB) eight times. Furthermore, one of our female partners won the Woman Lawyer of the Year award from Asian Legal Business (ALB) in 2017. Ms. Miho Niunoya was recognized as one of Asia’s Top 15 Female Lawyers for 2021 in ALB’s award for her work and expertise.

  • Advised Aichi Prefecture and Nagoya City in the development of a site for the 20th Asian Games, Aichi-Nagoya 2026 before and after the Games. Also assumed a post as a member of the selection committee in tenders for this project
  • Advised a leading renewable energy company in Europe on the acquisition of a number of offshore wind power projects being developed by Japanese companies in Japan
  • Advised a Japanese water treatment company in the acquisition of a water treatment company in Europe
  • Advised a ministry in Japan with a consulting company for investigation of renewable energy systems, dispute settlement systems, etc., aiming at improvement of legal systems for further development of renewable energy in Japan

  • Project development
  • Project finance
  • Real estate finance

  • Construction and materials
  • Energy
  • Government and public policy
  • Real estate
  • Social infrastructure

  • Tokyo Bar Association

  • Law degree from Hitotsubashi University (1991)
  • LL.M. from Northwestern University School of Law 1997