- O
- OO
- OO
- OO
- OOak
- OakOat
- OatObi
- ObiObs
- ObsOce
- OceOce
- OceOct
- OctOdd
- OddOde
- OdeODM
- OdmOer
- OerOff
- OffOff
- Offogo
- OGROh
- OhOhm
- OHMOja
- OjaOka
- OkaOkt
- OktOla
- OLAOld
- OldOle
- OleOli
- OliOli
- OliOll
- OllOLU
- OluOm
- OmOme
- OmeOmo
- OMOOna
- OOne
- OneOne
- OneOne
- oneOne
- ONFOnl
- Onl
- Oon
- OonOpe
- OpeOpi
- OpiOpu
- OpuOra
- OraOrb
- OrbOrc
- OrcOrd
- OrdOrg
- OrgOri
- OriOri
- OriOrm
- OrmOrp
- OrpOrr
- OrrOrt
- OrtOsb
- OsbOsc
- OscOsl
- Osl
- OstOte
- OTFOtr
- OTROtt
- OttOur
- ourOut
- OutOut
- OutOut
- OutOVE
- OVEove
- OveOVS
- OvtOWI
- OwiOxl
- OxlOzc
- OzcOzu
- Ozuozz
- 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
- Osculum Infame (French black metal band)
- 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)
- Osenga, Andrew
- Osenga, Andrew & DeLoach, Emily
- OSESP
- Osgood, Kresten (Danish jazz drummer)
- OShauN, Everything & Tropkillaz
- Oshea
- Osher
- oshi (producer)
- Oshiego (Singaporean death/thrash metal)
- Oshima, Michiru (Japanese anime, film, TV & video game composer)
- Oshima, Sean (Australian-Japanese singer)
- 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
- 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
- Oska (Maria Burger, singer-songwriter from vienna)
- Oska (DJ/Producer from Israel)
- Oskama Esteban
- Oskar (Ognjen Amidzic)
- Oskar
- Oskar Cyms
- oskar med k
- oskar med k & Joelle, Haley
- oskar med k & Khalid
- 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)
- Oskord
- Oskorri
- Oskr
- Oskura (Cliff Lin & Lucy Martin)
- Oslender, Simon (Keyboardist from Aachen, Germany)
- Oslin, K.T.
- Oslo (Los Angeles space rock band)
- Oslo (lo‐fi beatmaker)
- Oslo Domkor
- Oslo Ess
- Oslo Fagotkor
- Oslo Fagottkor
- Oslo Gospel Choir
- Oslo Harmonikvartett
- Oslo Ibrahim
- Oslo Ovnies (Spanish band)
- Oslo Parks
