Nishimura & Asahi is the largest law firm in Japan, the largest international law firm headquartered in Japan, and one of the oldest law firms in Japan. It has approximately 600 attorneys, foreign attorneys, and other professionals and provides a full range of legal services in all areas of business law for commercial activities both in Japan and overseas.

N&A provides efficient legal services with high added value, particularly for projects that require an ability to traverse multiple specialised areas, cutting-edge projects that require a high level of expertise, and projects that require immediate action. So as to strengthen its cross-border practices, and especially to enhance its network in Asia, N&A have opened offices in Beijing, Shanghai, Ho Chi Minh City, Hanoi, Bangkok, Jakarta, Yangon and Singapore.

N&A also has an office in Dubai. Furthermore, in order to realise one of its fundamental principles, to utilise its extensive network in order to provide quality legal services, N&A established Nishimura & Asahi LPC (a legal professional corporation) in 2012, with branch offices in Osaka, Nagoya and Fukuoka. In October 2018, N&A will be opening its first office in North America, based in New York City.