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.
JAPAN SINKS: People of Hope
Gaki no Tsukai No Laughing Batsu Game
Ningen Kansatsu Variety MONITORING
Isekai Izakaya "Nobu"
Murakami Mayonnaise no Tsukko Masete Itadakimasu!
有吉の冬休みバナナマン日村が歩く!ウォーキングのひむ太郎
M-1 Grand Prix
THE 10ミニッツ！
Yasei Bakudan no za Wārudo Chaneringu
Bura Mayo Sōdanbu Sono Nayami! Kosugi to Yoshida made
ブラマヨ衝撃ファイル 世界のコワ〜イ女たち
