- O
- oO
- OO
- OO
- OOak
- OakObe
- ObeObl
- OBL
- OcaOce
- OceOct
- OctOda
- ODAode
- OdeOdi
- Oes
- OesOff
- offOff
- OffOgr
- OgrOh
- OhOi
- OiOjo
- OjoOke
- OkeOl
- OlOld
- OldOld
- OldOli
- OliOli
- OliOll
- OllOlv
- OlyOma
- OmaOmi
- OmiOmu
- OMYOnC
- OndOne
- OneOne
- OneOne
- OneONL
- ONLono
- OnoOok
- OokOpe
- OpeOph
- OphOQu
- OquORA
- OraOrb
- OrbOrc
- OrcOre
- OreOri
- OriOri
- OriOrl
- OrlOro
- OroOrq
- OrqOrt
- OrtOsa
- OsaOsc
- OscOsk
- OSKOst
- OstOte
- OteOtr
- OtrOtt
- OttOur
- OurOut
- OutOut
- OutOut
- OutOve
- OveOve
- OveOwe
- Owe
- OwnOXZ
- OyOzo
- Ozoozz
- Oi Va Voi (British band)
- Oi Va Voi feat. Zinger, Earl
- Oi-Melz
- Oi-Skall Mates
- Oi! Scouts, The (Oi band from USA)
- Oi! Se Arma (Islas Canarias)
- Oi! The Arrase
- Oídos Fresh, Los
- Oigăn (Eugen Nuțescu)
- Óige
- Õigemeel, Birgit
- Oihenart, Maddi (Basque singer)
- OIJ (Dutch musician Valentijn Crouwel)
- Oikawa, Mitsuhiro
- Oiki (dubstep artist)
- Oil (Bolivian Rock Band)
- Oil (Hard Rock band from Lahr in Germany)
- Oil 10
- Oil Barons, The
- Oil Boom
- Oil Giant
- Oil on Canvas (Daggers, Hoffmann)
- Oil Thief
- Oiling Boiling Rhythm ’n’ Blues Band
- Oilix
- Oimara
- Oimara (aka Benedikt Hafner)
- Oingo Boingo
- OIO (polish Hip-Hop trio (OKI, Igi, Otsohodzi))
- OiOai (Portuguese pop-rock band)
- OIR A RIO
- Oirabot
- Oiseaux-Tempête
- Oishi, Masayoshi
- Oisín (70/80s Irish Celtic Folk)
- Oisin (Argentinian nu metal band)
- Oister Boy (Minneapolis grunge punk band)
- Oistrakh, David Fiodorovich (violinist)
- Oistrakh, David Fiodorovich, Berliner Philharmoniker
- Oistrakh, David Fiodorovich, State Academic Symphony Orchestra of the Russian Federation, Kondrashin, Kirill
- Oistrakh, David Fiodorovich, Yampolski, Vladimir
- Oistrakh, David Fiodorovich, Yampolsky, Vladimir
- Oito7Nove4
- Oizo, Mr. (Quentin Dupieux)
- Oizo, Mr. & Phra
- Oizo, Mr. feat. Bart B More
- Oizo, Mr. feat. Boys Noize
- Oizo, Mr. feat. Castro, Carmen
- Oizo, Mr. feat. Charli xcx
- Oizo, Mr. feat. Mocky
- Oizo, Mr. feat. Peaches
- Oizo, Mr. feat. Phra
- Oizo, Mr. feat. Siriusmo
- Oizo, Mr. feat. Skrillex
- Oizo, Mr. feat. Uffie
- Oizo, Mr., Phra & Frah Quintale
- OJ da Juiceman
- OJ da Juiceman & Gorilla Zoe
- OJ da Juiceman & Gucci Mane
- Ojaghloo, Mobin
- Ojala, Aleksi
- Ojanen, Ville
- Ojatula, Celeste
- Ojay (Alternative Rock)
- Ojba Rasta
- Ojeda Fabián (Paraguayan Christian music singer)
- Ojeda, Eddie
- Ojeda, Javier
- Ojeda, Jesús y sus Parientes (Regional Mexican)
- Ojeda, Tino
- Ojerime (R&B singer)
- Ojete Calor
- Ojete Calor feat. Calorettes, The
- Ojima, Yoshio (composer and music producer)
- Ojinaga, La Fiera De
- Ojito Pestaña
- OJM (Italian stoner rock band)
- Ojo Rojo (German stoner rock)
- Ojo, Daniel (Gospel Singer)
- Ojos (rapper fr)
- Ojos (French duo)
- Ojos de Brujo
- Ojos de Brujo feat. Amaral
- Ojos de Brujo feat. Bebe
- Ojos de Brujo feat. Capossela, Vinicio
- Ojos de Brujo feat. Chicuelo
- Ojos de Brujo feat. Drexler, Jorge
- Ojos de Brujo feat. Juno Reactor
- Ojos de Brujo feat. Najwa
- Ojos de Brujo feat. Pericos, Los
