- O
- OO
- OO
- OO
- OO
- OOak
- OakObe
- ObeObl
- OblObs
- ObsOce
- OceOch
- OchOct
- OctODD
- OddOde
- OdeOdi
- OdiODY
- OdyOfe
- OfeOff
- OffOG
- OGOGX
- OhOh
- OhOhN
- OHOOja
- OjaOka
- OkaOkl
- OklOla
- OlaOld
- OldOld
- OldOle
- OleOli
- OliOli
- OliOlm
- OlmOlu
- Oma
- OmaOme
- OmeOmn
- OmnOn
- OnOnd
- OndOne
- OneOne
- Oneone
- OneOni
- OniOnl
- OnlOnw
- OnwOon
- OoOOpe
- OpeOph
- OpiOpu
- OpuOra
- OraOrb
- OrbOrc
- Orcorc
- orcOre
- OreOrg
- OrgOri
- OriOri
- OriOrm
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- OrqOrt
- OrtOsa
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- OscOsi
- OsiOso
- OsoOsv
- OsvOth
- OthOts
- OtsOtt
- OttOur
- OurOut
- OutOut
- OutOUT
- OutOv
- OvOVE
- OveOVE
- OVEOwe
- OweOwl
- OwlOxm
- OxmOzb
- Ozb
- Ozuozz
- Oakland, Max
- Oakley Riot
- Oakley, Charly (Australian singer/songwriter)
- Oakley, Michael (U.K. synthwave artist/producer)
- Oakley, Michael feat. Phoenix, Dana Jean
- Oakman (French band)
- Oaks (Western Sydney Pop Punk)
- Oaks & Fahia (Spanish prog group)
- Oaks Worship
- Oaks, Chris (christian rapper)
- Oaks, Ely
- Oaks, Ely & LAVINIA
- Oaks, Ely & Spike, Eric
- 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)
- Oathean (Korea / Melodic Black/Death Metal)
- Oathless
- Oaths, The
- Oatmello
- Oatmello & SwuM
- Oats, Case
- 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
- Obama, Michelle (former First Lady of the United States)
- Obani (Obani)
- Öbarna
- Obas, Beethova
- 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)
- Oberer Totpunkt
- Oberg
- Öberg, Andreas
- Öberg, Mats
- Oberg, Uwe
- Oberhofer (Brooklyn, NY band of Brad 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
