 | 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 |
 | Oracles - Miserycorde Metal | 01.07.2016 |
 | Orange Goblin - Back From The Abyss Metal |  07.10.2014 |
 | Orange Goblin - Boxset Metal | 24.05.2011 |
 | Orange Goblin - Rough & Ready, Live & Loud [Live] Metal | 04.05.2020 |
 | Orange Goblin - Science Not Fiction Metal | 09.08.2024 |
 | Orange Goblin - The Wolf Bites Back Metal | 22.06.2018 |
 | 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 |