| Oaken Throne | Oaken Throne - #5 | 2007 | Zine |
| Oakhelm | Oakhelm - Betwixt and Between | 2007 | Vinyl |
| Obeisance | Obeisance - Satanik Shoktroops Auf Doom | 2008 | Vinyl |
| Obfuscation | Obfuscation - Swansongs | | Vinyl |
| Obituary | Obituary - Cause Of Death | | Vinyl |
| Obituary | Obituary - Cause Of Death (Picture Disc) | | Vinyl |
| Obituary | Obituary - Frozen Alive | 2006 | DVD |
| Obituary | Obituary - Slowly We Rot | 1997 | Vinyl |
| Obituary | Obituary - The End Complete | | Vinyl |
| Obliteration | Obliteration - Total Fucking Obliteration | 2005 | Vinyl |
| Obscurity | Obscurity - Damnations pride | | Vinyl |
| Obscurity | Obscurity - Ovations to death | | Vinyl |
| Obsession | Obsession - Marshall Law | | Vinyl |
| Obtained Enslavement | Obtained Enslavement - Centuries of Sorrow | 2011 | Vinyl |
| Obtained Enslavement | Obtained Enslavement - Witchcraft | | Vinyl |
| Obtest | Obtest - 997 | | Vinyl |
| Obtest | Obtest - Auka Seniems Dievams | | Vinyl |
| Obtest | Obtest - Dvylika JuodVarni | | Vinyl |
| Obtest | Obtest - Is Kartos I Karta | | Vinyl |
| Obtest | Obtest - Pries Audra | | Vinyl |
| Obtest | Obtest - Prisiek | | Vinyl |
| Obtest | Obtest - Tukstantmetis | | Vinyl |
| Occidens | Occidens - Descending of the Fire Hordes | 2005 | Tape |
| Occult | Occult - Intersincarnael | | Vinyl |
| Octinomos | Octinomos - Fuckhole Armageddon | | Vinyl |
| October Falls | October Falls - Marras | | Vinyl |
| October Falls | October Falls - Tuoni | 2006 | Vinyl |
| October Tide | October Tide - Rain Without End | 2010 | Vinyl |
| Odal | Odal - Einst Verehrt Von Allen / ...und auf Erden tobt die Schlacht... | 2006 | Tape |
| Odal | Odal - ...wilde Kraft | | Vinyl |
| Odal | Odal - ...wilde Kraft (PicLP) | | Vinyl |
| Odal | Odal - Fimbul Winter | | Vinyl |
| Odal | Odal - Germansk | 2001 | Tape |
| Odal | Odal - Logo | | Shirt |
| Odal | Odal - Sturmes Brut | | Vinyl |
| Odal | Odal - Sturmes Brut | 2007 | Tape |
| Odal | Odal - Sturmes Brut (PicLP) | | Vinyl |
| Odal | Odal - Traitor | | Vinyl |
| Odal | Odal - Zornes Heimat | 2008 | Vinyl |
| Odal -...wilde Kraft (Shirt) | Odal -...wilde Kraft (Shirt) - | | Shirt |
| Odins Law | Odins Law - To Death We Ride | | Vinyl |
| Odium | Odium - The Sad Realm of the Stars | | Vinyl |
| Odroerir | Odroerir - Odroerir | | Vinyl |
| Ofermod | Ofermod - Myst | 1998 | Vinyl |
| Ofermod | Ofermod - Myst | 2005 | Vinyl |
| Ofermod | Ofermod - Tiamtü | 2008 | Vinyl |
| Offense | Offense - Shining Dawn | 1996 | Vinyl |
| Officium Triste | Officium Triste - Mountains Of Depressiveness | | Vinyl |
| Officium Triste | Officium Triste - Ne Vivam | | Vinyl |
| Officium Triste | Officium Triste - Roses on my Grave | | Vinyl |
