- O
- OO
- OO
- OO
- OOak
- OakOat
- OatObi
- ObiObs
- ObsOce
- OceOce
- OceOct
- OctOdd
- ODDOde
- OdeODO
- odoOes
- OesOff
- OffOff
- OffOgr
- OGROh
- OhOHN
- OHNOjb
- OjeOKA
- OKAokt
- OktOLA
- OlaOld
- OldOle
- OleOli
- OliOli
- OliOlm
- OlmOlv
- OlvOma
- OmaOme
- OmeOmo
- OmoOna
- ONBOne
- OneOne
- Oneone
- oneONG
- OngOnl
- OnlOnu
- OnuoOo
- Ope
- OpeOpi
- OpiOpu
- OpvOra
- OraOrb
- OrbOrc
- OrcOrd
- OrdOrg
- OrgOri
- OriOri
- OriOrn
- OrnOrq
- OrqOrr
- OrrOrt
- OrtOsb
- OsbOsc
- OscOsm
- OsmOst
- Oth
- OthOts
- OtsOtt
- OttOur
- OurOut
- OutOut
- OutOut
- OutOve
- OveOve
- OveOvy
- OWOwl
- OwlOxl
- OxmOzc
- OzcOzu
- Ozuozz
- Owl City & Yuna
- Owl City feat. Blacc, Aloe
- Owl City feat. Chrystopher, Shawn
- Owl City feat. Düren, Breanne
- Owl City feat. Hanson
- Owl City feat. Hoppus, Mark
- Owl City feat. Jepsen, Carly Rae
- Owl City feat. Lights
- Owl City feat. Nicole, Britt
- Owl City feat. Owen, Jake
- Owl City feat. Russell, Sarah
- Owl City feat. SEKAI NO OWARI
- Owl City feat. Stirling, Lindsey
- Owl Company
- Owl Cries
- Owl Eyes (Australian recording artist Brooke Addamo)
- Owl John
- Owl Paws
- Owl Service, The
- Owl Vision
- Owl, The (jazz group, Poland)
- owlh
- Owlle
- Owlpark
- Owls (rock band from Chicago)
- Owls and Orcas, The (Belgian pop rock band)
- Owls of the Swamp
- Owls, Miguel
- Owls, The (indie pop band from Minneapolis)
- Owman, Christine
- Own Devices (Soul)
- Öwnboss & Sevek
- Öwnboss, Sevek
- Owned (alternative rock)
- Ownglow (UK drum & bass artist; Sam Reeves)
- Owsey
- Owsey feat. Ayelle
- Owsi (French rapper)
- Owsley
- Owusu & Hannibal
- Owusu, Genesis
- Owusu, Genesis feat. Callinan, Kirin J
- Owusu, Jewel
- Owusu, Philip
- OWV (Our only Way to get Victory)
- OX (Canadian lo-fi indie rock band)
- Ox (rapper Christopher Wilkes, performs on the MadWorld OST)
- OX (german post-grunge Band)
- Ox en Mayo Alto
- Ox, Matt
- OX:N
- ox33n
- Oxa, Anna
- Oxart
- Oxbow (experimental rock band)
- Oxen ((Swedish Indie Rock Band))
- Oxenryd, Sandra
- Oxford & Co.
- Oxford Camerata (English chamber choir)
- Oxford Camerata, Schola Cantorum of Oxford, Carey, Colm, Summerly, Jeremy
- Oxford Camerata, Summerly, Jeremy
- Oxford Collapse
- Oxford Drama
- Oxford, Charlie
- Oxford, Doña
- Oxford, Lauren
- Oxford, Vernon (country)
- Oxford's, Los (Mexican rock band)
- Oxhole
- Oxia
- Oxia feat. Kittin
- Oxide & Neutrino
- Oxide & Neutrino feat. Harvey
- Oxide & Neutrino feat. Kaish
- Oxide & Neutrino feat. Kowdean
- Oxide & Neutrino feat. Sef
- Oxide & Neutrino feat. Swiss, Skat D, Kaish & Harvey
- Oxidize
- Oxidize (Swedish metal band)
- Oxiplegatz
- Oxis (DIY electronic artist)
- Oxlade
- Oxlade & Ipupa, Fally
- Oxlade & Popcaan
- Oxlade feat. Dave
- Oxlade feat. N'abania, Flavour
- Oxlade feat. Owó, Tomi & Ojahbee
- Oxlade feat. Sarkodie
- Oxlade feat. Wande Coal
- Oxley
