- Capitollium (Symphonic Black-Ukraine)
- Capillaries (Death Metal-Israel)
- Caerimonium (Melodic Black-Norway)
- Collibus (Progressive Metal-United-Kingdom)
- Cilicium (Death Thrash-Italy)
- Cthonium (Black Metal-Greece)
- Ciborium (Folk Metal-Portugal)
- Chtonium (Thrash Death-Sweden)
- Caput Mortum (Black Metal-Peru)
- Cryptoclidus (Atmospheric Death-United-Kingdom)