Private company

Nagashima Ohno & Tsunematsu

Japanese firm based in Marunouchi1

Nagashima Ohno & Tsunematsu (長島・大野・常松法律事務所, Nagashima Ōno Tsunematsu Hōritsu Jimusho) is one of the "Big Four" law firms in Japan. It was founded in 2000 upon the merger of Nagashima & Ohno with Tsunematsu Yanase & Sekine.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1961Founded1

Nagashima Ohno & Tsunematsu (長島・大野・常松法律事務所, Nagashima Ōno Tsunematsu Hōritsu Jimusho) is one of the "Big Four" law firms in Japan. It was founded in 2000 upon the merger of Nagashima & Ohno with Tsunematsu Yanase & Sekine.2

Timeline

  1. 1961Founded Founded1

Sources

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