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Riko has over 20 years of experience in audit and accounting. After acquiring her CPA licence in Japan in 2000, she worked with a Big 4 in Japan for 7 years before joining Grant Thornton Taiyo in Japan in 2007. Her main roles in Grant Thornton Taiyo have been twofold, international auditing and executive liaison between Grant Thornton International and Grant Thornton Taiyo.

Between 2013 and 2017, she was seconded to Grant Thornton UK as the head of the Japan desk in the UK and European region. Riko’s efforts had seen much success and generated new business together with the European member firms.

Upon being made a partner of Grant Thornton Taiyo in 2017, Riko was the first female partner in audit in Grant Thornton Japan.

Riko is a senior member of the Japanese Institute of Certified Public Accountants (JICPA). She also leads diversity and inclusion committee for JICPA. She is also a member of Grant Thornton International’s Global Audit Quality Steering Committee. 

Riko leads audit engagements with clients in the luxury sector such as French and US footwear companies where the team conducts both group audit and statutory audit. She also has extensive experience in audit in accordance with Japanese GAAP, IFRS and US GAAP.

  • Master of Leadership and Strategy from London Business School with a scholarship from JICPA
  • Bachelor of Business Management from Yokohama National University
  • Certified Public Accountant in Japan
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Riko Watanabe
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Partner – Head of Japan Desk
Riko Watanabe
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