 | The Offering - Seeing The Elephant Metal |  04.11.2022 |
 | The Offspring - Days Go By Rock | 26.06.2012 |
 | The Offspring - Let The Bad Times Roll Punk | 16.04.2021 |
 | The Offspring - Supercharged Punk | 11.10.2024 |
 | The Okee Dokee Brothers - Can You Canoe? Folk/Ludowa |  15.05.2012 |
 | The Old Ceremony - Fairytales and Other Forms of Suicide Rock | 21.08.2012 |
 | The Old Dead Tree - Second Thoughts Metal |  06.12.2024 |
 | The Old Dead Tree - The End [EP] Metal | 06.12.2019 |
 | The Oldians - Out Of The Blue Reggae/Ska | 18.03.2016 |
| The Omega Experiment - [Nowa Płyta] Metal | nieustalona |
 | The Omega Swarm - Crimson Demise Metal | 26.07.2024 |
 | The Omnific - The Law Of Augmenting Returns Metal | 31.01.2025 |
 | The Once - Row Upon Row of the People They Know Folk/Ludowa | 25.10.2011 |
 | The One AM Radio - Heaven Is Attached By A Slender Thread Rock | 12.04.2011 |
 | The Orb - C Batter C Elektroniczna | 15.11.2011 |