 | Oak Pantheon - The Absence Metal |  20.01.2023 |
 | Oak, Ash & Thorn - Our Grief Is Thus Metal | 19.04.2024 |
 | Oakenshield - Legacy Metal | 17.02.2012 |
 | Oakmord - Take The Step Metal | 21.03.2025 |
 | Oath To Vanquish - [Nowa Płyta] Metal | nieustalona |
 | Oathbreaker - Ease Me & 4 Interpretations [EP] Metal | 08.05.2020 |
 | Oathbreaker - Rheia Metal | 30.09.2016 |
| Oathbringer - Tales Of Valor Metal | 12.01.2024 |
 | Oberschlesien - I Metal |  04.12.2013 |
 | Oberschlesien - Oberschlesien II Metal | 24.04.2015 |
 | Oberst - Toil Metal | 26.04.2024 |
 | Obituary - Cause Of Death Live Infection Metal | 26.08.2022 |
 | Obituary - Dying Of Everything Metal | 13.01.2023 |
 | Obituary - Inked In Blood Metal | 24.10.2014 |
 | Obituary - Obituary Metal | 17.03.2017 |