- Obituary (1721 Hits)
- Obscurity (2791 Hits)
- Officium Triste (1324 Hits)
- Omission (1215 Hits)
- Omnium Gatherum (120 Hits)
- Onheil (809 Hits)
- Onkel Tom Angelripper (877 Hits)
- Onslaught (1511 Hits)
- Oppressus (1486 Hits)
- Orae (1341 Hits)
- Orden Ogan (1291 Hits)
- Out For Blood (897 Hits)
- Outrage (JPN) (391 Hits)
- Overkill (1213 Hits)
- Ozzy Osbourne (1381 Hits)