
Koki Yanagida (born 1946) was a Japanese yakuza enforcer affiliated with the Dojima-gumi family of the Tojo-kai during the 1980s. On 15 December 1988, he took part in the manhunt for Kazuma Kiryu in Kabukicho, Tokyo, beating up a similarly-dressed man after mistakenly believing that the man was trying to prank him and his search team. On 18 December 1988, he finally tracked down Kiryu and Tetsu Tachibana to Little Asia, but Kiryu and Tachibana beat down Yanagida and his team of hitmen and briefly escaped before Lao Gui kidnapped Tachibana.