O

• Beth Orton
• Bonnie Owens
• Don Omar
• Erick Onasis
• Ginny Owens
• Hazel O'Connor
• Jake Owen
• James Otto
• Jamie O'Hara
• Jamie O'Neal
• Jeannie Ortega
• Jeffrey Osborne
• Joan Osborne
• Kelly Osbourne
• Maren Ord
• Marie Osmond
• Mark Owen
• Melissa O'Neil
• Mike Oldfield
• O'Ryan
• O-Town
• Oak Ridge Boys
• Oasis
• Oathean
• Obituary
• Obliveon
• Oblivion
• Oblivion Dust
• Obsidian Gate
• Obtained Enslavement
• Obtest
• Ocean Colour Scene
• Oceans Of Sadness
• Oceansize
• October 31
• October Fall
• Odd Project
• The Odds
• Odes Of Ecstasy
• Odious
• Odious Sanction
• Of Montreal
• Of The Son
• of The Wand And The Moon
• Off By One
• Off Minor
• Off With Their Heads
• Officer Negative
• Offset
• The Offspring
• Oh, Sleeper
• Oi Polloi
• Oingo Boingo
• OK Go
• Okkervil River
• Ol' Dirty Bastard
• Ola Onabule
• Old 97's
• Old Dead Tree
• Old Man's Child
• Old Man Gloom
• Oleander
• Olive
• Oliver Magnum
• Olivia
• Omar A. Rodriguez-Lopez
• Omarion
• OMD
• Omen
• Omnium Gatherum
• On Broken Wings
• On The Last Day
• On Thorns I Lay
• OnceOver
• One-21
• The One AM Radio
• One Chance

• One Dollar Short
• One King Down
• One Less Reason
• One Man Army
• One Minute Silence
• One True Thing
• One Way System
• Onelinedrawing
• OneRepublic
• Onesidezero
• One:Day:Life
• Only Crime
• Paul Oakenfold
• Renee Olstead
• Sinead O'Connor
• Stacie Orrico
• Tim O'Brien
• Will Oldham
• Aubrey O'Day
• Daniel O'Donnell
• The O'Jays
• Tim O'Reagan
• O.A.R.
• Oakley Hall
• The Oak Ridge Boys
• Oblivion Sun
• Ric Ocasek
• The Octopus Project
• Office
• Ohmega Watts
• Babatunde Olatunji
• Old & In the Way
• Old Crow Medicine Show
• Ollabelle
• P.J. Olsson
• Once Nothing
• One Be Lo
• One Block Radius
• One Day as a Lion
• One Fine Day
• One Nine Hundred
• Yoko Ono
• Onyx
• OOIOO
• Operation Ivy
• Operator
• Operator Please
• Opeth
• Roy Orbison
• Orbital
• Oreskaband
• Orgy
• Orianthi
• Los Orishas
• Orleans
• Orson
• Fernando Ortega
• Johnny Osbourne
• Ozzy Osbourne
• Donny Osmond
• The Osmonds
• Os Mutantes
• Otep
• Shuggie Otis
• Ai Otsuka
• Ours
• Our Lady Peace
• The Outfield
• Outkast
• Over It
• Over the Rhine
• Judith Owen
• Buck Owens
• Oysterhead
• Ozomatli
• Ozric Tentacles
• Mark O'Connor