Kōsuke Toriumi (鳥海 浩輔 Toriumi Kōsuke?, born on May 16, 1973 in Chigasaki, Kanagawa Prefecture) is a Japanese voice actor employed by Arts Vision.
He voices Asahina Azusa in the Brothers Conflict series, and performed as said character in the anime's ending theme "14 to 1", Brothers Conflict: Passion Pink's opening theme "AFFECTIONS", and Brilliant Blue's opening theme "JEALOUSNESS".