- O
- OO
- OO
- OOak
- OakOb
- ObeObo
- OBOOce
- OceOch
- OchOct
- Odd
- OddODM
- ODOOf
- OfOff
- OFFOgr
- OgrOh
- OhOIR
- OirOKA
- OkaOku
- OkuOla
- OlaOld
- OldOli
- OliOli
- OliOls
- OlsOMA
- OmaOme
- OmeOmo
- OMPOnd
- One
- OneOne
- OneOni
- OniOno
- OnoOom
- OomOpe
- OpeOpp
- OppOra
- OraOrb
- OrbOrc
- OrcOrg
- OrgOri
- OriOrk
- OrkOrp
- OrpOrr
- OrrOrv
- OrvOsb
- OsbOsi
- OsiOst
- OstOth
- OthOtt
- OttOue
- OugOut
- OutOut
- OutOut
- OutOve
- OveOVR
- ovrOwl
- OwlOxx
- OxyOZR
- ozz
- Oliver, Sy & Young, Trummy
- Oliver, Sy and His Orchestra
- Oliver, Thomas
- Oliver/Dawson Saxon
- Olivera (Finnish trance vocalist, song “Shooting Star” with John Dahlbäck)
- Olivera, Abril (Argentinian singer)
- Olivera, Abril & ACUS
- Olivera, Abril & Espil, An
- Olivera, Abril & Páez, Fito
- Oliveras, Eugenio (US singer / rapper)
- Oliveray
- Olivero Beats
- Oliverse
- Oliverse feat. Exxe, Elle
- Olives (Thai girl group)
- Olivesi, Leïla (French pianist & composer)
- Olivia (US R&B & hip‐hop artist)
- Olivia (J-Pop/Rock artist Olivia Lufkin)
- Olivia (Jazz musician from Manila)
- OLIVIA (Belgian solo pop artist Olivia Trappeniers)
- Olivia and the Lovers
- Olivia Barton
- Olivia Bragoli
- Olivia feat. 50 Cent
- Olivia Foy (Country Pop Artist)
- Olivia II (lo-fi musician Olivia Kessler)
- OLIVIA inspi' REIRA (TRAPNEST)
- Olivia Pale
- Olivia Project, The
- Olivia the Band
- Olivia Tremor Control, The
- Olivia, Beren (UK singer-songwriter)
- Olivia, Chelsea
- Olivia, Chika
- Olivia's World
- Olivier Heim (Olivier Heim is a Dutch songwriter and performer also known as a member of Très.b and Anthony Chorale.)
- Olivier, Christian
- Olivier, Franck
- Olivier, Géraldine
- Olivier, Jérémy (Producer, composer, and DJ)
- Olivier, Samuel
- Olivor, Jane
- Olivver the Kid
- Olivyah
- Ollabelle
- Ollano
- Ollella
- Ollero, Jay
- Olli PA
- Ollie (Finnish singer‐songwriter Olli‐Matti Kalliosaari)
- Ollie (Canadian rapper)
- Ollie & Jerry
- Ollie & The Nightingales
- Ollie Dixon
- Ollie feat. CHRIS YONGE
- Ollie feat. Rosanio, Annamarie
- Ollie feat. SONNY
- Ollie feat. Stewart, Kolton
- Ollie joe
- Ollie Joseph
- Ollie MN
- Ollie, Peppermint
- Olliver, Julia
- Ollo, Lóstrego!
- Olly (Italian singer/rapper Federico Olivieri)
- Olly & JVLI
- Olly & JVLI
- Olly Anna
- Olly Molly
- Olly, Mango, Angelina & JVLI
- Olma (ambient guitar)
- Olmeca
- Olmerová, Eva
- Ölmez, Orhan
- Olmos
- Olmos, Walter
- OLMS
- Olms, The
- Olney, David
- OLNL (korean rapper)
- Olodum
- Olof Wallberg
- Olomana
- Olomidé, Koffi
- Olomidé, Koffi & Quartier Latin
- Olomidé, Koffi feat. Gawlo, Coumba
- Olotila
- Olrait's, The
- Ols (one-woman project from Poland)
- Olsen & Fu (Two polish rappers)
