| Cäctus | Hard Rock | Bizkaia | |
| Calathea | Post-hardcore/Metalcore | Bizkaia | |
| Cavan | Metalcore | Araba | |
| Cerebral Effusion | Brutal Death Metal | Bizkaia | |
| Chernobyl | Thrash Metal | Nafarroa | |
| Cobra | Rock/Metal | Bizkaia | |
| Conflict Noise | Death Metal | Bizkaia | |
| Conteiner | Sludge Metal | Bizkaia | |
| Corrosive | Metalcore | Nafarroa | |
| Crazy World | Hard Rock | Bizkaia | |
| Crucifucked | Crust/Black/Death Metal | Bizkaia | |
| Cult Of Misery | Crust/Death Metal | Bizkaia | |
| Damned Ritual | Thrash/Death Metal | Nafarroa | |
| Daño Dolor | Blackened Hardcore | Araba | |
| Days Of Abuse | Techno Metal | Bizkaia | |
| Death From Above | Death Metal | Lapurdi | |
| Death In Effigy | Death/Black Metal | Araba | |
| Deborah Riff | Rock/Metal | Bizkaia | |
| Deceiver | Thrash Metal | Bizkaia | |
| Decline | Black/Death Metal | Bizkaia | |
| Decrepit Artery | Death/Grindcore | Araba | |
| Deimocracy | Groove Metal | Bizkaia | |
| Delenda Est | Alternative Metal | Araba | |
| Delion | Heavy Metal | Araba | |
| Detached At Birth | Beatdown/Metal/Hardcore | Nafarroa | |
| Devil Vow | Heavy Metal | Bizkaia | |
| Diabulus In Musica | Symphonic Metal | Nafarroa | |
| Diktatur | Black Metal | Lapurdi | |
| Dinky Dau | Heavy Rock | Araba | |
| Dire End | Death Metal | Bizkaia |