| Ortolani, Riz - Cannibal Holocaust - Original Soundtrack | Soundtrack | CD | $ 13.00 |
| Ossian - Az Utolso Lazado | Heavy Metal | CD | $ 10.00 |
| Ossuary Insane - Demonize the Flesh | Metal | CD | $ 8.00 |
| Otargos - Ten-Eyed Nemesis | Metal | CD | $ 10.00 |
| Otep - Sevas Tra | Power Metal | CD | $ 12.00 |
| Out For Blood / Organ - Pulse of the Underground | Death Metal | CD | $ 7.00 |
| Outcast / Moker - Split | Death Metal | mCD | $ 8.15 |
| Outremer - Turn Into Grey | Death Metal | CD | $ 12.95 |
| Oxiplegatz - Sidereal Journey | ExperiMETAL | CD | $ 12.50 |
| Oxiplegatz - Worlds and Worlds | Black Metal | CD | $ 12.00 |
| OXL - Satan is Evil | Grind | CD | $ 11.50 |
| Ozric Tentacles - Arborescence | Stoner Rock | CD | $ 10.00 |
| Ozzy Osbourne - Live at Budokan | Heavy Metal | CD | $ 12.00 |
| Ozzy Osbourne - No More Tears | Heavy Metal | CD | $ 12.00 |