Koichi Tsukamoto (塚本 幸一, Tsukamoto Kōichi, September 17, 1920 – June 10, 1998) was a Japanese businessman, the founder of Wacoal, and the first President of Nippon Kaigi (1997–1998). He was from the former town of Gokashō, now part of Higashiōmi, in Shiga Prefecture. He enlisted in the Imperial Japanese Army in 1940 and fought in Battle of Imphal during the Burma Campaign of the Pacific War, aged only 19. He was demobilized 3 years later at age 21.