- O
- OO
- OO
- OO
- OO
- oOak
- OakObe
- ObeObl
- OBLOC
- OCOce
- OceOCN
- OCn
- OctOdd
- OddOde
- OdeOdo
- OdoOet
- OetOff
- OffOff
- OffOgl
- OglOh
- OhOhl
- OhlOis
- OisOKA
- OkaOKI
- OkkOl
- OlOld
- OldOLD
- OldOle
- OleOli
- OliOli
- OliOlm
- Olu
- Oma
- OmaOme
- OmeOmn
- OmnOn
- OnOnd
- OndOne
- OneOne
- OneONE
- OneOni
- OniOnm
- OnMOny
- OnyOos
- OosOpe
- OpeOpo
- OpoOqu
- OquOra
- OraOrb
- OrbOrc
- OrcOrd
- OrdOrf
- OrfOri
- OriOri
- OriOrl
- OrlOro
- OroOrq
- OrqOrt
- OrtOS
- OSOsb
- OsbOsh
- OshOsm
- OsmOST
- OSTOth
- OthOtr
- OtrOtt
- OttOum
- OunOUT
- OutOut
- OutOut
- OutOuu
- OuvOve
- OveOvi
- OviOwe
- OweOws
- OwsOxy
- Oxy
- OZZ
- OZZozz
- Osbourne, Ozzy feat. John, Elton
- Osbourne, Ozzy feat. McCready, Mike
- Osbourne, Ozzy feat. Osbourne, Kelly
- Osbourne, Ozzy feat. Post Malone
- Osbourne, Ozzy feat. Primus
- Osbourne, Ozzy feat. Rhoads, Randy
- Osbourne, Ozzy feat. Was (Not Was)
- Osbourne, Ozzy feat. Wylde, Zakk
- Osbourne, Ozzy feat. Zappa, Dweezil
- Osbourne, Ozzy w/Therapy?
- Osbourne, Ozzy with Crystal Method, The, DMX, Ol’ Dirty Bastard & Fuzzbubble
- Osbourne, Ozzy with Infectious Grooves
- Osbourne, Ozzy with Osbourne, Kelly
- Osbourne, Ozzy with Rhoads, Randy
- Osbourne, Ozzy with Therapy?
- Osbourne, Ozzy with Zappa, Dweezil
- Osbournes, The
- Osby, Greg (American jazz saxophonist)
- OSC (UK DJ/producer Damon Baxter)
- Osca
- Osca (Zak, Jesse, Joe, Tom - of Wednesbury)
- Oscar (David Hachour & Florent Sabaton; house music)
- Oscar (UK musician Paul Nicholas)
- Oscar (romanian rapper)
- Oscar (early 90s group)
- Oscar (Paul Oscar Beuselinck)
- Oscar + Martin
- Oscar and the Karma
- Oscar and the Wolf
- Oscar Basza
- Oscar Blesson (Norwegian Rapper)
- Oscar Blesson & Amara
- Oscar Blesson & Benyoub, Jonas
- Oscar de Fontana
- Oscar de la Hoya
- Oscar Dunbar
- Oscar G.
- Oscar G. and Falcon, Ralph
- Oscar G. featuring Michel, Marck
- Oscar Hammerstein II and Richard Rodgers
- Oscar Hamod & The Majestics (60s rock band)
- Oscar Harris & The Twinkle Stars
- Oscar Jerome
- Oscar Jerome & Armon‐Jones, Joe
- Oscar Jerome feat. Akinnibi, Kaidi
- Oscar Jerome feat. MAURICE, Ms
- Oscar Jerome ft. La Havas, Lianne
- Oscar les vacances
- Óscar Lobete (Pianista)
- Oscar Lolang
- Oscar Lukas (Singer-songwriter)
- Oscar Medina
- Oscar Peterson (Oscar Peterson)
- Oscar the Grouch (Sesame Street muppet)
- Oscar The Wild (Adelaide indie-pop band)
- Oscar, Alexander
- Oscar, Brad
- Oscarcito (Oscar Eduardo Hernández)
- oscarhw
- 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
- 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)
- Osei The Seventh (Trinidadian pop artist living in London)
- Osenga, Andrew
- Osenga, Andrew & DeLoach, Emily
- OSESP
- OSESP, Karabtchevsky, Isaac
- Osgood, Kresten (Danish jazz drummer)
- OShauN, Everything & Tropkillaz
- Oshea
- Osher
- oshi (producer)
- Oshiego (Singaporean death/thrash metal)
- Oshima Brothers (Sean and Jamie Oshima)
