 | Ofermod - Pentagrammaton Metal |  22.06.2020 |
 | Oferwintran - It Often Befalls Those Metal | 14.10.2022 |
 | Offending - Human Concept Metal |  16.08.2011 |
 | Offensive - Blast From The Past Metal | 08.04.2023 |
 | Officium Triste - Hortus Venenum Metal | 06.09.2024 |
 | Officium Triste - The Death Of Gaia Metal | 13.12.2019 |
 | Ofnus - Valediction Metal | 28.02.2025 |
 | Oh Hiroshima - Oscillation Metal |  26.07.2019 |
 | Oh, Sleeper - Bloodied / Unbowed Metal | 12.07.2019 |
 | Oh, Sleeper - Children of Fire Metal | 27.09.2011 |
 | OHHMS - Close Metal | 26.06.2020 |
 | OHHMS - Rot Metal | 31.03.2023 |
 | Ohol Yeg - Shadows Of The Future Converged Metal | 13.05.2025 |
 | Okkultist - O.M.E.N. Metal | 07.04.2023 |
 | Okkultokrati - La Ilden Lyse Metal | 15.05.2020 |