| Asgarth | Heavy Metal | Gipuzkoa | |
| Astigarraga Thrower | Death Metal | Gipuzkoa | |
| Atlas Project | Melodic Death Metal/Groove Metal | Nafarroa | |
| Atxurra | Death/doom metal | Gipuzkoa | |
| Auritz | Heavy Metal | Bizkaia | |
| Azken Oroimena | Thrash metal | Lapurdi | |
| BackBone | Sludge Metal | Bizkaia | |
| Balarrasa | Hard Rock | Bizkaia | |
| Basati | Metal | Gipuzkoa | |
| Belex | Pagan Black Metal | Nafarroa | |
| Beyond His Faith | Metal | Bizkaia | |
| Bide Bakarra | Rap Metal | Nafarroa | |
| Bide Galdua | Folk/Black Metal | Bizkaia | |
| Biersbreaker | Viking Metal | Gipuzkoa | |
| BlackBeltz | Heavy Metal | Nafarroa | |
| Blackhearth | Heavy Metal | Bizkaia | |
| Blast Wave | Power Metal | Gipuzkoa | |
| Bloody Brotherhood | Death Metal | Gipuzkoa | |
| Bourbon Kings | Nu Metal | Nafarroa | |
| Broken Legacy | Metalcore | Gipuzkoa | |
| Brumadensa | Hardcore/Metal | Gipuzkoa | |
| BudaSam | Hard Rock | Bizkaia | |
| Bullets Of Misery | Deathcore | Bizkaia | |
| Burn in Hell | Heavy metal | Bizkaia | |
| Burni Jotzailek | Heavy Metal | Gipuzkoa | |
| Bushido | Rock/metal | Lapurdi | |
| Butronian | Black Metal | Bizkaia | |
| Cäctus | Hard Rock | Bizkaia | |
| Calathea | Post-hardcore/Metalcore | Bizkaia | |
| Cavan | Metal | Araba |
