Artist Names That Start With O
- O.A.R.
- O.A.R. and B.o.B
- O.T. Genasis
- Oasis
- Obituary
- Ocean
- October Fall
- Odyssey
- Of Mice & Men
- Of Monsters and Men
- Of Montreal
- OFF!
- Official Hot Mess
- Offset
- OG Maco
- Oh Land
- Oh Wonder
- Oh, Sleeper
- Ohio Express
- Oingo Boingo
- OK Go
- Okkervil River
- Ol’ Dirty Bastard
- Ólafur Arnalds
- Old 97’s
- Old Crow Medicine Show
- Old Dominion
- Oleta Adams
- Olive
- Oliver
- Oliver $ & Jimi Jules
- Oliver Heldens
- Oliver Heldens x Becky Hill
- Olivia Lane
- Olivia Newton-John
- Olivia O’Brien
- Ollie & Jerry
- Olly Murs
- Omarion
- OMC
- OMD
- OMI
- One Bad Son
- One Direction
- One Night Only
- One Ok Rock
- OneRepublic
- Opeth
- OPM
- Opus III
- Orange Juice
- Orbital
- Orianthi
- Original Cast of SpongeBob SquarePants, The New Musical
- Orlando Gibbons
- Orleans
- Orson
- Osborne Brothers
- Oscar Brand
- Oscar Isaac
- Osibisa
- Otep
- Otis & Carla
- Otis Redding
- O-Town
- Otto Knows
- Ou Est le Swimming Pool
- Our Lady Peace
- Ours
- Outasight
- OutKast
- Overkill
- Owen
- Owen Pallett
- Owl City
- Oysterhead
- Ozark Mountain Daredevils
- Ozomatli
- Ozuna
- Ozzy and Kelly Osbourne
- Ozzy Osbourne
- The Oak Ridge Boys
- The Obernkirchen Children’s Choir
- The Offspring
- The Ohio Players
- The O’Jays
- The Only Ones
- The Orb
- The Orb featuring David Gilmour
- The Orioles
- The Orlons
- The Orwells
- The Osmonds
- The Outfield
- The Outhere Brothers
- The Outlaws
- The Outlaws (UK)
- The Outsiders