- O
- OO
- OO
- OO
- OO
- OOak
- OakObe
- ObeObl
- oblObs
- ObsOce
- OceOch
- OchOCT
- OctODC
- ODCOdd
- OddOde
- OdeODU
- ODUof
- ofOFF
- OffOFK
- OfMOgr
- OgrOh
- OhOhi
- OhiOim
- OimOK
- OKOke
- OkeOl
- OlOl
- OlaOld
- OldOle
- OleOlg
- OlgOli
- OliOli
- OliOls
- OlsOma
- OmaOma
- OmaOme
- OmeOmn
- OmnOn
- OnOne
- OneOne
- OneOne
- OneOne
- OneOnk
- OnkOno
- OnoOny
- OnyOos
- OosOpe
- OpeOPL
- OPMOpu
- OpuOra
- OraOrb
- OrbOrc
- OrcOrd
- OrdOre
- OreOri
- OriOri
- OriORK
- OrkOro
- OroOrq
- OrqOrr
- OrrOrt
- OrtOsa
- OsaOsc
- OscOSK
- OskOss
- OssOta
- OtaOth
- OthOtt
- OttOtt
- OttOur
- OurOut
- OutOut
- OutOut
- OutOv
- OvOve
- OveOVE
- OVEOwe
- OweOwl
- OwlOxm
- OxmOza
- OzaOzo
- OzoOzz
- Oscar, Brad
- Óscar, Tio
- Oscarcito (Oscar Eduardo Hernández)
- oscarhw
- Oscario
- Oscenrad
- Oscher, Paul
- Oschino
- Oscillation, The (UK drone ambient rock)
- Oscillian (synthwave from Sweden)
- Oscillian feat. Nina
- Oscu (Argentine youtuber, influencer and trap singer)
- Oscu & Elio
- Oscu & Flexo
- Oscu & Ra, Luck
- Oscu & Rusherking
- Oscu, Elio & Flexo
- Oscuro (Musician & Producer)
- Osdorp Posse (Dutch hip hop group)
- Osdorp Posse & Nembrionic
- Osdorp Posse met Blind Justice
- Ose
- Osees (use also for Thee Oh Sees and Oh Sees)
- Osei The Seventh (Trinidadian pop artist living in London)
- Osen & Baha
- Osenga, Andrew
- Osenga, Andrew & DeLoach, Emily
- OSESP
- OSESP, Karabtchevsky, Isaac
- Osgood, Kresten (Danish jazz drummer)
- oShaman
- oShaman; Chrono Rapper
- OShauN, Everything & Tropkillaz
- Oshea
- Osher
- oshi (producer)
- Oshiego (Singaporean death/thrash metal)
- Oshima Brothers (Sean and Jamie Oshima)
- Oshima, Michiru (Japanese anime, film, TV & video game composer)
- Oshima, Sean (Australian-Japanese singer)
- Oshins (Lucas Arens)
- Oshio, Kotaro
- Osho, Josh
- Osho, Josh & Childish Gambino
- Osho, Josh & Ghostface Killah
- Oshota
- OSHUN (female hip hop duo)
- Oshwa
- OSI (progressive rock band)
- Osi and the Jupiter
- Osi and the Jupiter feat. Aerial Ruin
- Osi and the Jupiter feat. Nemuer
- Osi and the Jupiter feat. Tithe
- Osi and the Jupiter feat. Wolcensmen
- Osiah
- Osiah feat. Ben Duerr
- Osibisa
- OSIE
- Osiecka, Agnieszka
- Osińska, Dorota
- Osiris (US funk band)
- Osiris (progressive rock band from Bahrain)
- OSIRIS
- Osiris Wolf
- Osíris, Conan (Portuguese singer/songwriter)
- Osiris, YK
- Osiris, YK feat. Kehlani
- Osiris, YK feat. Russ
- Osiris, YK feat. Snoop Dogg
- Osirois Music
- Osirus Jack (French-Senegalese rapper, 667/LDO)
- Osiva
- Ósk, Keath
- Oska (Maria Burger, singer-songwriter from vienna)
- Oska (DJ/Producer from Israel)
- Oskama Esteban
- Oskar (Ognjen Amidzic)
- Oskar
- Oskar (UK electronic duo Jonny Dawe & Nick Powell)
- Oskar Cyms
- oskar med k
- oskar med k & Joelle, Haley
- oskar med k & Marini
- Oskar, Griffin
- Oskar, Karl (Swedish singer-songwriter)
- Oskar, Lee
- Oskee, Tay
- Osker
- Oski (Australian DJ & producer)
- OSKI (Belgian rapper & producer Oscar Santos)
