- Opeth - Watershed (2008)
- Ozzy Osbourne - Black Rain (2007)
- One Republic - Dreaming Out Loud (2008)
- Ordog - Life is too Short for Learning to Live (2008)
- Outlawz - We Want In the streets (2008)
- Oasis - Dig Out Your Soul (2008)
- Ofermod - Tiamtü (2008)
- Onyx Eyes - Delights and Tears (2008)
- Oi Va Voi - Oi Va Voi (Self-Titled) (2007)
- Oz - Fire in the Brain (2008)
- Opeth - Burden[Single] (2008)
- Our Last Night - The Ghosts Among Us (2008)
- Ozzy Osbourne - Live in Argentina (2008)
- Operahouse - Escape From The Sun (2009)
- Old Man's Child - Slaves of The World (2009)
- OSI - Blood (2009)
- Obituary - Darkest Day 2009
- Oi Va Voi - Travelling The Face Of The Globe (2009)
- Otep - Smash The Control Machine (2009)
- Old Man's Child - Slaves Of The World (2009)
- Overkill - Ironbound (2010)
- Orianthi Panagaris - Believe - 2009
- Okkervil River - The Stand Ins 2008
- One Republic - Waking Up/2009
- Orphaned Land - The Never Ending Way of Orwarrior 2010