 | Ophiuchi - Shibboleth Metal |  30.04.2021 |
 | Opia - I Welcome Thee, Eternal Sleep Metal | 25.04.2025 |
 | Opium Lord - Vore Metal | 11.10.2019 |
 | Opium Warlords - Nembutal Metal | 04.12.2020 |
 | Opposition Party - Tales To Horrify [EP] Metal | 15.11.2019 |
 | Opus Arise - The Network Metal | 02.12.2022 |
 | Orange Goblin - Rough & Ready, Live & Loud [Live] Metal | 04.05.2020 |
 | Orange Goblin - Science Not Fiction Metal | 19.07.2024 |
 | Orange Goblin - The Wolf Bites Back Metal | 15.06.2018 |
 | Oranssi Pazuzu - Farmakologinen [EP] Metal | 13.04.2017 |
 | Oranssi Pazuzu - Mestarin Kynsi Metal | 17.04.2020 |
 | Oranssi Pazuzu - Muuntautuja Metal | 11.10.2024 |
 | Orbit Culture - Death Above Life Metal |  03.10.2025 |
 | Orbit Culture - Descent Metal | 18.08.2023 |
 | Orbit Culture - Nija Metal | 07.08.2020 |