- O
- OO
- OO
- OO
- OOaf
- OAFOaK
- OakOBE
- ObeObn
- OBOOca
- Oce
- OceOCS
- OCSOct
- OctOdd
- OddODE
- ODEOdo
- OdoOf
- OfOff
- OffOff
- Off
- OgrOh
- OhOhm
- OHMOiz
- OizOka
- OkaOkl
- OklOla
- OlaOld
- OldOld
- OldOle
- OleOli
- OliOli
- OliOls
- OlsOly
- OlyOma
- OmaOme
- OmeOMN
- OmnOna
- OnaOne
- OneOne
- OneOne
- OneOne
- OneOnl
- OnlOnr
- OnrOok
- OokOpe
- OpeOpe
- OpeOps
- OpsOra
- ORAOrb
- OrbOrc
- OrcOrc
- OrcOre
- OreOrg
- OrgOri
- OriOri
- OriOrn
- OrnOrq
- OrqOrr
- OrrOrt
- OrtOsa
- OsaOsc
- OscOsl
- OslOst
- OstOTE
- Oteoto
- OtoOtt
- OttOu
- OuaOur
- OurOut
- OutOut
- OutOut
- OutOve
- OveOve
- OveOwe
- OweOwl
- OwlOxm
- OxmOzc
- OzcOzu
- Ozuozz
- Olivia (J-Pop/Rock artist Olivia Lufkin)
- Olivia (jazz singer from Manila)
- OLIVIA (Belgian solo pop artist Olivia Trappeniers)
- OLIVIA & Sinha, Paul
- 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 King
- 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 Orand (aka Hol Baumann)
- Olivier, Christian
- Olivier, Franck
- Olivier, Géraldine
- Olivier, Jérémy (Producer, composer, and DJ)
- Olivier, Samuel
- Olivor, Jane
- Olivver the Kid
- Olivyah
- Oliwood
- Oljeberget & Katastrofe
- Ollabelle
- Ollano
- Ollella
- Ollero, Jay
- Olley, Chris
- Olli PA
- Ollie (Finnish singer‐songwriter Olli‐Matti Kalliosaari)
- Ollie (Canadian rapper)
- Ollie (Estonian singer Oliver Mazurtshak)
- Ollie & D, Nic
- 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 Joseph & Apollo
- Ollie MN
- Ollie, Peppermint
- Ollivierre, Dylan
- Ollmann, Kurt (baritone)
- Ollo, Lóstrego!
- Olltii
- Olly (Italian singer/rapper Federico Olivieri)
- Olly & Arisa
- Olly & JVLI
- Olly & JVLI
- Olly Anna
- Olly Junglist (Electronic/D&B producer, features on Rhythmic Remedies)
- Olly Molly
- Olly, Mango, Angelina & JVLI
- Olma (ambient guitar)
- Olma feat. Grigoni, Mike
- Olmeca
- Olmerová, Eva
- Ölmez, Orhan
- Olmos
- Olmos & Ellis, Richard
- Olmos & OZNE
- Olmos feat. Reynolds, Kyle
- 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
- Olovson
- Olrait's, The
- Olrog, Ulf Peder
- Ols (one-woman project from Poland)
