- Obituary (1655 Hits)
- Obscurity (2769 Hits)
- Officium Triste (1288 Hits)
- Omission (1185 Hits)
- Omnium Gatherum (84 Hits)
- Onheil (784 Hits)
- Onkel Tom Angelripper (825 Hits)
- Onslaught (1461 Hits)
- Oppressus (1450 Hits)
- Orae (1312 Hits)
- Orden Ogan (1247 Hits)
- Out For Blood (873 Hits)
- Outrage (JPN) (345 Hits)
- Overkill (1189 Hits)
- Ozzy Osbourne (1349 Hits)