Takaharu Mitsui

Baron Takaharu Mitsui (三井 高陽, Mitsui Takaharu; 10 July 1900 – 19 May 1983) was a Japanese businessman, scholar and philatelist. He is considered the "dean of Japanese philately" by many in the philatelic world.

He headed one of six main branches of the Mitsui family, of the Mitsui zaibatsu.