- O
- OO
- OO
- OOak
- OakObe
- ObeObs
- ObsOce
- OceOct
- OctOdd
- OddODE
- ODEOdu
- ODVOff
- OffOG
- OGOh
- OHOhm
- OhmOjo
- OjoOki
- OkiOla
- OlaOld
- OldOle
- OleOli
- OliOlo
- OloOma
- OmaOme
- OmeON
- ONOne
- OneONE
- ONEOne
- OneOnl
- OnlOnu
- OnwOpa
- OpaOph
- OphOR
- OrOrb
- OrbOrc
- OrcOre
- OreOri
- OriOrk
- OrkOrp
- OrpOrs
- Orsory
- OrzOsc
- OscOsl
- OslOst
- OstOti
- OtiOtt
- OttOur
- OurOut
- OutOut
- OutOve
- OveOve
- OveOwe
- OweOxm
- OXOOzo
- OzoOZZ
- Olexesh, Calo & Fouine, La
- Olexesh, Casper & Yung Hurn
- Olexesh, Ćelo & Abdï
- Olexesh, Hanybal & Young Buck
- OLF
- Olga (Olga Blues Babe aka Laolga)
- Olgun, Soner
- Olhava (Russia / Atmospheric/Post-Black Metal)
- Olho Seco
- OLI (UK singer- songwriter)
- Oli Barton & The Movement
- Oli Fox
- Oli P.
- Oli P. & Emilia
- Oli P. feat. Emilia
- Oli XL
- Olialia Pupytės (Lithuanian band)
- Oligar
- Oligarkh (Russian electronic group)
- Olimareños, Los
- Olin and the Moon (LA)
- Olin Janusz (Most recent album released under his real name.)
- Olio su Telnet
- Olioso, Dolores
- Olipage (folk/pop singer from Montreal, QC, Canada)
- Oliphant, Grassella
- Oliphant, Grassella Quartette
- Oliva (Solo band of Jon Oliva)
- Oliva, Carlos
- Oliva, Jon, Pain
- Olivares, Fito
- Olivares, Fito y La Pura Sabrosura
- Olivares, Pablo (Argentine Christian music singer)
- Olivarez, David
- Olivas, Alfredo (Regional Mexican singer and musician)
- Olivas, Karl
- Olive (UK dance/breakbeat/trip‐hop group)
- Olive (Indonesian jazz singer Olivia Latuputty)
- Olive (Los Angeles based visual and audio artist)
- Olive B
- Olive Drab
- Olive et moi
- Olive the boy
- Oliveira, Dalva de
- Oliveira, Diego
- Oliveira, Diógenes L.
- Oliveira, Douglas and The Red Dogs
- Oliveira, Eliã (Brasil Gospel)
- Oliveira, Gloria de
- Oliveira, Jair
- Oliveira, Jairzinho
- Oliveira, Judson
- Oliveira, Paula & Moreira, Bernardo
- Oliveira, Reese
- Oliveira, Reese, One Voice Children’s Choir, Mitch Bandley, Armanie Wright, Caldwell, Matthew, Kami Bromley, Macy Hanks, Isabel Oakeson, Sidnie Anderson, Meggie Sorensen & Mattea Denney
- Oliveira, Simone de (Portuguese singer and actress)
- Olivencia, Tommy
- Olivencia, Tommy y su Orquesta
- Olivencia, Tommy y su Orquesta
- Oliver (late 60s/early 70s US pop singer)
- Oliver (nu-disco electronic duo)
- Oliver (LA Music production/DJ duo)
- Oliver (Finnish band)
- Oliver (Argentinian punk rock band)
- Oliver $
- Oliver $ & Jules, Jimi
- Oliver Boyd and the Remembralls
- Oliver Dragojević & Dalmatino
- Oliver Dragojević & Gibonni
- Oliver Dragojević & Oto Pestner
- Oliver Elf Army
- Oliver Englafjord (trance)
- Oliver feat. Chromeo
- Oliver feat. De La Soul
- Oliver feat. Elohim
- Oliver feat. Else, Leon
- Oliver feat. Mellis, Scott
- Oliver feat. MNDR
- Oliver feat. Sparro, Sam
- Oliver feat. Yelle
- Oliver Future
- Oliver Hazard (Band)
- Oliver Henrich feat. Kloß, Stefanie & Catterfeld, Yvonne
- Oliver Hohlbrugger
- Oliver Houston
- Oliver Jones Trio (Jazz)
- Oliver North Boy Choir (pop / electronica)
- Oliver Onions
- Oliver Pinder
- Oliver Riot
