
Kotaro Taniguchi (born 1957) was a Japanese yakuza enforcer who was affiliated with the Kijin-kai subsidiary of the Omi Alliance in Osaka during the 1980s. On 17 December 1988, he and a few other Kijin-kai enforcers attempted to attack their clan's rival, Goro Majima, outside the Kijin-kai office in Dotonbori, but Majima took them down in a public brawl.