Name: Ryuichi Kosugi
Birthday: 05 July 1973
Deathday: null
Place of Birth: Kyōto, Kyōto Prefecture, Japan
Known For: Acting
Ryuichi Kosugi (小杉 竜一, Kosugi Ryūichi, born 5 July 1973) is a Japanese comedian born in Kyoto who performs tsukkomi in the comedy duo Black Mayonnaise along with his partner Takashi Yoshida. His standing position is in the left. He is represented by Yoshimoto Kogyo.
