- O
- oO
- OO
- OO
- OOak
- OakObe
- ObeOBL
- OBNOca
- OcaOce
- OceOct
- OctOdb
- ODCOde
- OdeODM
- ODOOf
- OfOff
- OffOff
- OfiOgr
- OgrOh
- OhOi
- OiOjo
- OKOke
- OkeOl
- OlOld
- OldOld
- OldOli
- OliOli
- OliOll
- OlmOly
- OlyOma
- OmaOmi
- OmiON
- onOnd
- OndOne
- OneOne
- OneOne
- OneOnl
- onlOnr
- OnrOol
- oomOpe
- OpeOpi
- OpiOqu
- OquOra
- oraOrb
- OrcOrc
- OrcOre
- OreOri
- OriOri
- OriOrl
- OrlOrp
- OrpOrq
- OrqOrt
- OrtOsa
- OsaOsc
- OscOsl
- OslOst
- OstOTF
- OTFOtr
- OtsOtt
- OttOur
- OurOut
- OutOut
- OutOut
- OutOve
- OveOVE
- Owe
- OweOX
- Ox
- OylOzo
- Ozoozz
- Oldham Tinkers, The
- Oldham, Andrew, Orchestra, The
- Oldham, Ned
- Oldham, Spooner
- Oldham, Will
- Oldhead
- Oldians, The (ska jazz band from Barcelona, Spain)
- Oldods
- OldPee (French rapper, 13 Block)
- Olds, Jerome
- Oldsoul
- oldstar
- Oldu O Zaman
- Ole 60
- Ole Alfsen
- Ole Erling
- Ole Evenrud
- Ole I’Dole
- Ole Ivars
- Olé Olé
- Olé Olé con Diges, Daniel
- Olé Olé con Modestia Aparte
- Olé Olé con Norte, El, Segura, Santiago, Modestia Aparte, Antonio Albella y Pingüino en mi ascensor, Un
- Olé Olé con San Basilio, Paloma
- Oleander
- Oleksza
- Olemus
- Olen
- Olender, Al
- Olenius, Adam
- Olenka & the Autumn Lovers
- Oléria, Ellen
- Olestar, Los
- Olexandr Ignatov
- Olexesh (German rapper)
- Olexesh & AJÉ
- Olexesh & AK Ausserkontrolle
- Olexesh & Amo
- Olexesh & ASAP Twelvyy
- Olexesh & Azzi Memo
- Olexesh & Bonez MC
- Olexesh & Capital Bra
- Olexesh & Edin
- Olexesh & Haaland936
- Olexesh & Katch, DJ
- Olexesh & Nimo
- Olexesh & O.G.
- Olexesh feat. AJÉ
- Olexesh feat. Blumenblatt, Marla
- Olexesh feat. Ćelo & Abdï
- Olexesh feat. Ćelo & Abdï & Chaker
- Olexesh feat. Ćelo, Abdi & Hanybal
- Olexesh feat. Edin
- Olexesh feat. Eko Fresh
- Olexesh feat. Hanybal
- Olexesh feat. Karate Andi
- Olexesh feat. Nimo
- Olexesh feat. Sido
- Olexesh feat. Veysel
- Olexesh feat. Wainwright, Karen J.
- Olexesh feat. Yasha
- Olexesh, Calo & Fouine, La
- Olexesh, Casper & Yung Hurn
- Olexesh, Ćelo & Abdï
- Olexesh, Hanybal & Young Buck
- OLF
- Olga (Olga Blues Babe aka Laolga)
- Olga (Finnish singer and actress Olga Heikkala)
- Olga & Elliot, Isac
- Olga Chorens & Tony Álvarez (Cuban Duo)
- Olgas Boris
- Olgun, Soner (Turkish musician)
- 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 P. feat. Frank, Tina
- Oli XL
- Oli&Taj
- Olialia Pupytės (Lithuanian band)
- Oligar
- Olimareños, Los
- Olimpia (not the Italian singer)
- Olin and the Moon (LA)
- Olin Janusz (Most recent album released under his real name.)
- Olina (Greek London-based indie songwriter)
