Cabrakaän (Symphonic / Folk-metal)
‡ Cadacross (Melodic/Death/Folk/Metal)
‡ Caladmor (Epic Folk-metal)
Calico Jack (Pirate Folk-metal)
The Call (Symphonic Folk-metal)
Cân Bardd (Folk/Black Metal)
Cantus Levitas (Mittelalter Rock/metal)
Captain Jack’s Army (Speedfolk)
‡ Cat O’ Nine Tail (Pirate metal)
‡ Catuvolcus (Folk/Black Metal)
‡ Cave Growl (Alcoholic Folk-metal)
‡ Caverns of Arnosh (Folk-metal)
Celestic (Heroic Melodic Death Metal)
Celkilt (Folk-punk)
Cellar Darling (Folk-metal)
Celtachor (Celtic/Folk/Black Metal)
Celtian (Symphonic Folk-metal)
Celtibeerian (Folk-metal)
‡ Celtibeers (Folk-metal)
Celtica (Celtic Pipe Rock)
Celtic Legacy (Folk-metal)
Cemican (Prehispanic Folk-metal)
Ceolskog (Acoustic/Folk-metal)
‡ Cerberus (Atmospheric/Folk Metal)
Cernunnos (Folk-metal)
Cernunnos’ Folk Band (Folk-metal)
Chain of Dogs (Folk/Thrash/Punk)
The Chant of Trees (Mediative Folk-metal)
Ch’aska (Folk-metal)
Chur (Folk-metal)
‡ Circle J (Folk-punk)
‡ Circle of Grief (Gothic Metal/Folk)
‡ Circle of Tyrants (Folk/Black Metal)
Claim the Throne (Melodic/Death/Folk-metal)
‡ Clamor Silvae (Folk Viking-metal)
The Clan (Irish Rock)
‡ Clanrock (Folk-metal/Celtic Rock)
‡ Cnoc An Tursa (Folk/Black Metal)
Codex Verus (Medieval Rock)
‡ Conorach (Folk/Power Metal)
Corte di Lunas (Renaissance Celtic Folk Rock)
Corvidae (Medieval Rock/Metal)
Crash Nomada (Folk Punk)
The Crazy Rogues (Celtic Punk)
Crescent Lament (Folk-metal)
‡ Crimfall (Symph. Power/Folk Metal)
Cronica (Folk-metal)
Cruachan (Celtic/Folk Metal)
Cruadalach (Folk-metal)
‡ Cryptic Age (Progressive Folk-metal)
Crystalmoors (Cantabrian Pagan Metal)
‡ Cultus Ferox (Medieval Rock)
‡ Cumulo Nimbus (Renaissance Metal)
Curare (Andean Folk-metal)