* Cali Gari
* The Candy Spooky Theater
* Canzel
* The Captains
* Casiopea
* Celluloid[disambiguation needed]
* Chaba
* Chara
* Champloose
* Changin' My Life
* Charcoal Filter
* Charlotte (しゃるろっと)
* Chatmonchy
* Chemical Pictures (ケミカルピクチャーズ)
* Cherryblossom
* The Chewinggum Weekend
* Chihara Minori
* Chihiro Onitsuka
* Chitose Hajime
* Church of Misery
* Clammbon
* ClearVeil
* Coaltar of the Deepers
* Cocco
* Coach*
* Cocobat
* Cold Rain
* Color
* Cool Joke
* Concerto Moon
* CORE OF SOUL
* Cornelius
* Corrupted
* Creature Creature
* Crunch[disambiguation needed]
* Crush 40
* Curio