 | On Thorns I Lay - Threnos Metal |  21.02.2020 |
 | Once - After Earth Metal | 25.01.2019 |
 | Once Human - Evolution Metal | 17.02.2017 |
 | Once Human - Scar Weaver Metal | 18.02.2022 |
 | Once Human - Stage Of Evolution [Live] Metal | 28.10.2018 |
 | Ondfødt - Det Österbottniska Mörkret Metal | 26.05.2023 |
 | Ondfødt - Dimsvall Metal | 16.05.2025 |
 | Ondfødt - Oldfodt [EP] Metal | 05.04.2024 |
 | Ondskapt - Grimoire Ordo Devus Metal | 05.02.2021 |
 | One Machine - The Final Cull Metal | 18.09.2015 |
 | One Tail, One Head - Worlds Open, Worlds Collide Metal | 05.10.2018 |
 | One-Way Mirror - Capture Metal |  27.01.2015 |
 | Onfodt - Norden Metal | 13.08.2021 |
 | Onheil - In Black Ashes Metal | 14.07.2023 |
 | Onheil - Storm Is Coming Metal | 05.09.2014 |