- O
- OO
- OO
- OOak
- OakObe
- ObeObs
- ObsOce
- Oceoch
- OchOct
- OctOde
- OdeOdo
- OdoOfa
- OfaOff
- OffO
- OOha
- OhaOiz
- OizOKA
- OKAOl
- OlOld
- OldOle
- OleOli
- OliOli
- OliOls
- OlsOma
- OmaOml
- OmmOn
- OnOne
- OneOne
- OneOne
- OneOnl
- OnlOny
- OnyOpe
- OpeOpi
- OpiOra
- OraOrb
- OrbOrc
- OrcOre
- OreOri
- OriOrk
- OrkOro
- OrpOrr
- OrrOrw
- OrwOsb
- OsbOsk
- OskOst
- OstOth
- OthOtt
- OttOur
- OurOut
- OutOut
- OutOva
- OvaOve
- OveOwe
- OweOxb
- Oxe
- OzeOZZ
- Ole I'Dole
- Ole Ivars
- Olé Olé
- Olé Olé con Diges, Daniel
- Olé Olé con Materia Prima
- 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
- Ole, Olli
- Oleander
- Oleg (electropop)
- Olejniczak, Janusz (pianist)
- Oleksza
- Olemus
- Olen
- Olender, Al
- Olenius, Adam
- Olenka & the Autumn Lovers
- Olestar, Los
- Olexandr Ignatov
- Olexesh (German rapper)
- Olexesh & AJÉ
- Olexesh & AK Ausserkontrolle
- Olexesh & Amo
- Olexesh & Azzi Memo
- Olexesh & Bonez MC
- Olexesh & Capital Bra
- 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)
- 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
