- Obituary (1927 Hits)
- Obscurity (3147 Hits)
- Officium Triste (1483 Hits)
- Omission (1355 Hits)
- Omnium Gatherum (254 Hits)
- Onheil (968 Hits)
- Onkel Tom Angelripper (1016 Hits)
- Onslaught (1918 Hits)
- Oppressus (1648 Hits)
- Orae (1498 Hits)
- Orden Ogan (1605 Hits)
- Out For Blood (1006 Hits)
- Outrage (JPN) (646 Hits)
- Overkill (1424 Hits)
- Ozzy Osbourne (1550 Hits)