Kōji Kikkawa (吉川 晃司, Kikkawa Kōji, born August 18, 1965 in Hiroshima) is a Japanese musician. His most recent album is 2009's Double-Edged Sword.
Kōji was supposed to represent Japan in water polo in the coming Olympics but chose to be a singer. His music career began on February 1, 1984 with "Monica" (later remade in Cantonese sung by Leslie Cheung) and he won 8 music awards in the same year. After taking a short break in 1988, he came back as a lead singer in the band Complex with Tomoyasu Hotei (former guitarist of Boøwy) and "Be My Baby" was released. Complex remained as one of the most popular bands in Japan until 1990.
After "Complex", Kōji released series of hit singles such as "Setsunasa O Korosenai", "Kiss Ni Utarete Nemuritai" and "Boy's Life". Kōji completed a "20th Anniversary Tour" at Budokan on February 1, 2005.
In 2006 he recorded "One World," the theme for the 2006 motion picture Kamen Rider Kabuto: God Speed Love. More recently, he had teamed up with popular Japanese DJ TWINS to release a single "Juicy Jungle". Also, DJ TWINS had released an album with remixes of several of Kōji's previous hits.