- O
- OO
- OO
- OO
- OOak
- OakOat
- OatObi
- ObiObs
- ObsOce
- oceOch
- OchOct
- OctOdd
- OddODE
- ODEOdo
- OdoOf
- OfOFF
- OffOfi
- OFKOgr
- OgrOh
- OhOht
- OhtOjo
- OjoOka
- OkdOku
- OkuOld
- OldOld
- OldOle
- OleOli
- OliOli
- OliOls
- Olsom
- OmOMB
- OMBOmi
- OmiOn
- OnOnd
- OndOne
- OneOne
- Oneone
- ONEOni
- ONJOno
- OnoOob
- OOcOpa
- OpaOpe
- OpOpp
- OprOra
- OraOrb
- OrbOrc
- OrcOrd
- OrdOre
- OreOri
- OriOri
- OriOrl
- OrlOrp
- OrpOrq
- OrqOrt
- ortOs
- OsOsc
- OscOsk
- OskOss
- Ossota
- OtCOto
- OtoOtt
- OttOui
- OuiOus
- OusOut
- OutOut
- OutOv
- OvOve
- OveOvi
- OviOwe
- OweOxf
- OxfOza
- OzaOZR
- ozz
- Oliverse feat. Dani King
- 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 singer from Manila)
- OLIVIA (Belgian solo pop artist Olivia Trappeniers)
- OLIVIA & Sinha, Paul
- 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
- Ollabelle
- Ollano
- Ollella
- Ollero, Jay
- Olley, Chris
- Olli PA
- Ollie (Finnish singer‐songwriter Olli‐Matti Kalliosaari)
- Ollie (Canadian rapper)
- 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 & JVLI
- Olly & JVLI
- Olly Anna
- Olly Junglist (Electronic/D&B producer, features on Rhythmic Remedies)
- Olly Molly
- Olly, Mango, Angelina & JVLI
- Olma (ambient guitar)
- 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)
