- O
- OO
- OO
- OOak
- OakOBG
- ObiObs
- ObsOce
- OceOct
- OctODD
- OddODE
- ODEOdy
- OdyOff
- OffOga
- OgaOh
- Ohohs
- OhtOK
- OKOko
- OkoOla
- OLAOld
- OldOli
- OliOli
- OliOls
- OlsOm
- OmOmi
- OmiOn
- OnOne
- OneOne
- OneOne
- OneOnl
- OnlOob
- OobOpe
- OpeOpp
- OppOra
- OraOrb
- OrbOrc
- OrdOrg
- OrgOri
- OriOrl
- OrlOrp
- OrpOrt
- OrtOsa
- OsaOsc
- Oscoso
- OsoOte
- OteOtt
- OTT
- Out
- OutOut
- OutOut
- OutOve
- OveOV
- OVROwl
- OwlOz
- OzOZZ
- Oakenfold, Paul feat. Spitfire
- Oakenfold, Paul feat. Tawiah
- Oakenfold, Paul feat. Tedder, Ryan
- Oakenfold, Paul feat. Thompson, Hunter S.
- Oakenfold, Paul feat. Torrini, Emilíana
- Oakenfold, Paul feat. Vadney, Robert
- Oakenfold, Paul feat. Werner, Carla
- Oakenfold, Paul feat. Werner, Carla
- Oakenfold, Paul feat. Young, Christopher
- Oakenfold, Paul featuring Murphy, Brittany
- Oakenfold, Paul vs. Bambaataa, Afrika & Soulsonic Force
- Oakenfold, Paul, ZHU & Velvet Cash
- Oakey, Philip & Moroder, Giorgio
- Oakey, Philip & Moroder, Giorgio
- Oakey, Philip with Moroder, Giorgio
- Oakhands
- OAKK
- Oakk, Breezy
- Oakland, Guy
- Oakland, Max
- Oakley Riot
- Oakley, Michael (U.K. synthwave artist/producer)
- Oakman (French band)
- Oaks & Fahia (Spanish prog group)
- Oaks Worship
- Oaks, Chris (christian rapper)
- OaKs, The
- Oaktree (Belgian electronic music producer)
- Oakwite
- Oakwood Station
- Oanh, Hoàng
- Oanh, Hoàng & Trung Chỉnh
- Oar (Australia, Metal)
- Oasis (Noel & Liam Gallagher)
- Oasis (Omar-S and Shadow Ray)
- Oasis (’70s US rock band)
- Oasis 4you (Mexican Christian music group)
- Oasis Chorale
- Oasis Worship
- Oates, Jackie
- Oates, John
- Oath (An alias of Steven Waddell, used in this Heavy Metal solo project based in Edinburgh, Scotland, UK, started in 2018.)
- Oath to Order (USA metalcore/deathcore)
- Oath, Das
- Oath, The (German heavy doom metal)
- Oathbreaker (Belgian post‐black metal band)
- Oathless
- Oaths, The
- Oatmello
- Oattes, Bernard
- Oatumn
- Oaty. (lo‐fi artist)
- OAU (OVERGROUND ACOUSTIC UNDERGROUND)
- OB (DnB Producer (North London))
- OB OBrien feat. Drake & Preme
- Oba Oba Samba House
- Obadiah Parker
- Obake
- Öbarna
- Obas, Beethova
- Obata, Takahiro (jazz pianist, keyboardist)
- OBB (Oswald Brothers Band)
- Obbie Messakh (Artist of JK Records)
- Obe Dve
- Obè, Amir
- Obè, Amir feat. PARTYNEXTDOOR
- Obè, Amir feat. Sostre, Eli
- Obed Marsh (Australian black/doom metal)
- Obel, Agnes (Danish singer)
- Oben, Cahit
- Obenski, Amy
- Oberbaum (German/Belgian artist Lucie Rezsöhazy)
- Oberer Totpunkt
- Oberg
- Öberg, Mats
- Oberhofer
- Oberhofer, Brad
- Oberle, Gregory
- Oberlin, Karen
- Oberpichler, Rale
- Oberritter Dóra ft. Lotfi, Begi
- Oberschlesien
- Oberst, Conor
- Oberst, Conor and Mystic Valley Band, The
- Obese Turtles, The (Kimya Dawson side project)
- Obeses
- Obey City
- Obey the Brave
- Obey, Ebenezer
- OBGMs, The
