Rui Komatsu (小松 塁, Komatsu Rui, born August 29, 1983 in Kōchi) is a Japanese footballer who last played for Giravanz Kitakyushu as a striker.
Because of this status, he was able to register as a Cerezo Osaka player while he was still eligible to play for his university club.
He returned to Cerezo for the 2007 season and his first goal for the club in a 3-1 win against Mito HollyHock, on May 23.
During the 2007 season, he managed to form a strike partnership with fellow striker Tatsuya Furuhashi, as the pair scored a total of 30 goals between them.
Due to injuries, after three years with Giravanz Kitakyushu, Rui Komatsu opted to quit football and retired in January 2018 to become a coach at Cerezo Osaka.