Ryūnosuke Tsukue (机 龍之介, Tsukue Ryūnosuke, born 13 August 1997 in Kanagawa) is a Japanese professional squash player.[1][2] July 8th, 2024, he reached his highest world ranking of No. 55,[3] and No. 1 in Japan.[4] He won the 2018 Japanese Nationals[5] and the 2019 Golden Open.[6][7][8]