- O
- OO
- OO
- OO
- OO
- OOak
- OakObe
- ObeObl
- OblOC
- OCOce
- OceOck
- OckOct
- OctOdd
- OddOde
- Odeodo
- OdoOer
- OerOff
- OffOff
- OffOgi
- OgiOh
- OhOhi
- OhiOiO
- OIROk
- OKOKI
- OkiOl
- OlOld
- OldOld
- OldOle
- OleOli
- OliOli
- OliOll
- OllOls
- OlsOma
- OMAOme
- OmeOmm
- OmmOn
- OnOnd
- OndOne
- OneOne
- OneOne
- OneONI
- OniOnl
- OnlOnu
- OnuOon
- OonOpe
- OpeOph
- OphOpu
- OpuOra
- OraOrb
- OrbOrc
- Orcorc
- orcOre
- OreOrg
- OrgOri
- OriOri
- OrjOrn
- OrnOrq
- OrqOrr
- OrrOrt
- OrtOsa
- Osa
- OscOsk
- OskOss
- OssOta
- Oth
- OthOtt
- OttOTT
- OTTOur
- OurOut
- OutOut
- OutOut
- OutOVA
- OVAOve
- OveOvi
- OviOwe
- OweOxb
- OxbOys
- Oys
- OZZ
- Owens, Christopher
- Owens, Chuck
- Owens, Craig (lead vocalist of Chiodos)
- Owens, Dave (US songwriter, known for "Wild One")
- Owens, Dave (Australian singer / songwriter)
- Owens, Dean
- Owens, Donnie
- Owens, Ginny
- Owens, Ginny & All Sons & Daughters
- Owens, Ginny & Andrews, Meredith
- Owens, Ginny & Bergthold, Andrew
- Owens, Ginny & Resound
- Owens, Ginny & Weaver, Mike
- Owens, Harry and His Royal Hawaiians
- Owens, Jack (blues guitarist)
- Owens, Jennifer (Essex Solo Artist)
- Owens, Kelly Lee
- Owens, Kelly Lee feat. Cale, John
- Owens, Kelly Lee feat. Hval, Jenny
- Owens, Robert (US songwriter, producer, DJ and house vocalist)
- Owens, Tex (country singer and songwriter)
- Owens, Tim “Ripper”
- Owens, Ulysses Jr.
- Owin y Jack
- Owiny Sigoma Band
- OWIS (South Korean virtual girl group, aka Only When I Sleep)
- Owiyo, Suzanna
- Owl (German death metal band)
- Owl (Hard rock band)
- Owl & Mouse
- Owl City
- Owl City & Jepsen, Carly Rae
- 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 (Singer for Save Us)
- Owls, The (indie pop band from Minneapolis)
- Owltian Mia
- 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
- owtiss (emoplugg artist)
- 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)
- Oxbow ft. Lingua Ignota
