 | Otargos - Fleshborer Soulflayer Metal |  10.12.2021 |
 | Otep - Generation Doom Metal | 15.04.2016 |
 | Otep - Kult 45 Metal | 27.07.2018 |
| Otep - The God Slayer Metal | 15.09.2023 |
 | Other World - Tenebrous Metal | 30.08.2024 |
 | Otherwise - Defy Metal | 08.11.2019 |
 | Otherwise - Peace At All Costs Metal |  16.09.2014 |
 | Otherwise - Sleeping Lions Metal | 20.09.2017 |
 | Otherwise - True Love Never Dies Metal | 08.05.2012 |
 | Ottone Pesante - Scrolls Of War Metal | 18.10.2024 |
 | Ou - II: Frailty Metal | 26.04.2024 |
 | Oubliette - The Passage Metal | 13.07.2018 |
 | Our Common Sense - Harbinger Of Calamity Metal | 19.11.2021 |
 | Our Mirage - Lifeline Metal |  24.08.2018 |
 | Our Place Of Worship Is Silence - Disavowed, And Left Hopeless Metal | 27.08.2021 |