Albums starting with O
- Dutch Uncles - O Shudder
- Red - Of Beauty and Rage
- Kataklysm - Of Ghosts and Gods
- OG Maco - OG Maco
- Stalley - OHIO
- Hawksley Workman - Old Cheetah
- Make Them Suffer - Old Souls
- Headstones - One In The Chamber Music
- Pillar - One Love Revolution
- Ensiferum - One Man Army
- AER - One Of A Kind
- Gungor - One Wild Life Soul
- Sweet & Lynch - Only To Rise
- K Camp - Only Way Is Up
- Joshua Radin - Onward and Sideways
- Hillsong Worship - Open Heaven / River Wild
- K-Major - Open House Vol. 84
- Jungle Rot - Order Shall Prevail
- Jet Life - Organized Crime
- Dayseeker - Origin
- Eluveitie - Origins
- Juicy J - O's To Oscars
- PROBLEM - OT
- Lifehouse - Out Of The Wasteland
- Lincoln Brewster - Oxygen