Hiroki Takahashi (?? ??, Takahashi Hiroki, born September 7, 1974 in Tokyo) is a Japanese actor, voice actor and singer whose major roles include Eiji Kikumaru in The Prince of Tennis, Kenji Harima in School Rumble, Hisoka in Hunter × Hunter (1999) and Katsuya Jonouchi in Yu-Gi-Oh! Duel Monsters.
In video games, he provides the voice of Ryu in the newer Street Fighter games.