- O
- OO
- OO
- OO
- OO
- OOak
- OakObe
- ObeObl
- OblOC
- OCOce
- OceOck
- OckOct
- OctOdd
- OddOde
- OdeODO
- odoOer
- OerOff
- OffOff
- OffOgi
- OgiOh
- OhOhh
- OhiOin
- OinOK
- OKokg
- okgOl
- OlOLB
- OlcOld
- OldOle
- OleOli
- OliOli
- OliOll
- OllOls
- OlsOma
- OmaOMC
- OmdOmi
- Omkon
- OnOnc
- OncOne
- OneOne
- OneOne
- OneOnh
- ONIOnl
- onl
- Oon
- OONOpe
- OpeOph
- OphOpt
- OptOra
- OraOrb
- ORBOrc
- OrcOrc
- OrcOre
- OreOrg
- OrgOri
- OriOri
- Oriorm
- OrnOrp
- OrpOrq
- OrqOrt
- OrtOsa
- OsaOsc
- OscOsk
- oskOss
- OssOT
- OtaOth
- Othott
- OTTOtt
- OttOur
- OurOut
- OutOut
- OutOut
- OutOva
- OvaOve
- OveOvi
- OviOwe
- OweOx
- OXOyi
- Ozi
- oziOZZ
- Oakley, Michael feat. Phoenix, Dana Jean
- Oakman (French band)
- Oaks & Fahia (Spanish prog group)
- Oaks Worship
- Oaks, Chris (christian rapper)
- Oaks, Ely
- Oaks, Ely & LAVINIA
- OaKs, The
- Oakstones, The
- Oaktown’s 357
- Oaktree (Belgian electronic music producer)
- Oakwite
- Oakwood
- Oakwood Station
- Oamen Samuel (Benny Zanda is the stage name for the artist, Oamen Samuel Osehoje is the official birth name.)
- 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 Ministry (Christian band)
- Oasis Worship
- Oat, Senior (deep house, amapiano, gqom, afro soul)
- Oates, Jackie
- Oates, Jackie & Spiers, John
- Oates, John
- Oath (An alias of Steven Waddell, used in this Heavy Metal solo project based in Edinburgh, Scotland, UK, started in 2018.)
- Oath, Das
- Oath, The (German heavy doom metal)
- Oathbound (Progressive metalcore band from Seattle)
- Oathbreaker (Belgian post‐black metal band)
- Oathless
- Oaths, The
- Oatmello
- Oatmello & SwuM
- Oats, Case
- Oattes, Bernard
- Oatts, Dick
- 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
- Obani (Obani)
- Öbarna
- Obas, Beethova
- Obata, Minako “mooki”
- Obata, Takahiro (jazz pianist, keyboardist)
- Obata, Yukari
- OBB (Oswald Brothers Band)
- Obbie Messakh (Artist of JK Records)
- Obe 1 Kanobe (russian rapper)
- Obe Dve
- Obè, Amir
- Obè, Amir feat. PARTYNEXTDOOR
- Obè, Amir feat. Sostre, Eli
- Obed Marsh (Australian black/doom metal)
- Obedient Wives Club
- Obel, Agnes (Danish singer)
- Oben, Cahit
- Obenski, Amy
- Ober, Hermann
- Oberbaum (German/Belgian artist Lucie Rezsöhazy)
- Oberg
- Öberg, Andreas
- Öberg, Mats
- Oberg, Uwe
- Oberhofer
- Oberhofer, Brad
- Oberkampf, Victoire
- Oberle, Gregory
- Oberlin, Karen
- Oberogo, Famous
- Oberogo, Famous & Frost, Damion
- Oberogo, Famous & Lacunza, Natalia
- Oberogo, Famous & Sango, Marta
- Oberogo, Famous & Villar, María
- Oberogo, Famous, Núñez, Miki & Sabela
- Oberogo, Famous, Núñez, Miki & Sabela
- Oberon (Greek psytrance)
- Oberon (space metal band from Ada, Oklahoma, USA)
- Oberon, DJ (UK techno/trance artist; Les Spalding)
- Oberpichler, Rale
- Oberritter Dóra ft. Lotfi, Begi
