| A-Z Heavy Metal |
| 131 grupos/bands con/with O (1/25) +26 (Octavia) +51 (One Minute Silence) +101 (Osborne, Joan) |
| Grupo | País |
| O' Williams, Wendy | MEX |
| O.n.a. | |
| Oath, The | |
| Oathean | RSA |
| Obituary | USA |
| Obliveon | CAN |
| Obliviaxe | USA |
| Oblivion | CAN |
| Obscenity | |
| Obscuration | FRA |
| Obscure | ESP |
| Obscurity | SWE |
| Obsessed, The | USA |
| Obsession | USA |
| Obtained Enslavement | NOR |
| Obtained Slavement | NOR |
| Obtest | LTU |
| Obus | ESP |
| Occult | NED |
| Occultus | COL |
| Ocean | FRA |
| Ocean Machine | USA |
| Oceana | MEX |
| Oceano de Sangre | ARG |
Ir a Base Datos/ Go to Data Base
