- O
- OO
- OO
- OO
- OO
- OOak
- OakObe
- ObeObl
- OblObt
- ObtOce
- OceOch
- ochOct
- OctOdd
- OddOde
- OdeOdi
- OdiOdy
- OdyOfe
- OfeOff
- OffOga
- OGBOh
- OhOha
- OhaOi
- OiOjo
- OjoOka
- okaOku
- OkuOla
- OlaOld
- OldOld
- OleOle
- OleOli
- OliOLI
- OliOls
- Olsom
- OmOma
- OmaOme
- OmeOmn
- OmnOn
- ONOne
- OneOne
- OneOne
- OneOne
- OneONL
- ONLOno
- OnoOOc
- OodOpa
- OpaOpe
- OpeOpp
- OppOr
- OrOra
- OraOrb
- OrbOrc
- OrcOrd
- OrdOrf
- OrfOri
- OriOri
- OriOrl
- OrlOro
- OroOrq
- OrqOrt
- OrtOrx
- OryOsb
- OsbOse
- OseOsm
- OsmOST
- OstOte
- OteOto
- OtoOtt
- OttOua
- OuaOur
- OurOut
- OutOut
- OutOut
- OutOve
- OveOve
- OveOVX
- OvyOwe
- OweOxi
- OxiOza
- OzaOzo
- OzoOZZ
- Orange Then Blue Featuring Adams, George
- Orange Yellow Red
- Orange Yeti
- Orange-I (Belgian 1990/2000s band)
- Orange, Adrian
- Orange, Adrian & Her Band
- orange, i.am. & disco, fredo
- OrangeBlue
- Orangefarm (New Zealand indie rock)
- OrangeG
- Oranger
- Oranges (post-hardcore/math rock band)
- Oranges & Lemons
- Oranges Band, The
- Orangestar
- Orangestar feat. IA
- Orangez
- Orangutan Juice
- Orangutang (Orangutang)
- Oranj Symphonette
- Oranje (Calgary-based emo and math rock band.)
- Oranssi Pazuzu (Finnish black metal)
- Orantes, Azucena (Christian music artist)
- Orantes, Francisco
- Orantes, Francisco feat. Christian
- Orantes, Marilú
- Oranžās Brīvdienas
- Oratnitza
- Orator (Bangladesh | Death/Thrash Metal)
- Oratorio
- Oratorio The World God Only Knows
- Oratory
- Orax (Italian)
- Orazbayeva, Aisha (Kazakh violinist)
- ORB (Australian prog rock)
- Orb (Lithuanian stoner)
- Orb, The
- Orb, The & Perry, Lee “Scratch”
- Orb, The feat. Perry, Lee “Scratch”
- Orb, The Featuring Perry, Lee “Scratch”
- Orba Squara
- Orbach, Jerry
- Orbach, Jerry, Lansbury, Angela and Chorus
- Orbakaitė, Kristina
- Orbans, The
- ORBI
- Orbion
- Orbison, Joy
- Orbison, Joy & Boddika
- Orbison, Joy & James, Joe
- Orbison, Joy w/ Gumbani, Goya
- Orbison, Joy w/ Sen, Léa
- Orbison, Joy, Overmono & Kwengface
- Orbison, Joy, Overmono & Skiifall
- Orbison, Roy
- Orbison, Roy & Harris, Emmylou
- Orbison, Roy & lang, k.d.
- Orbison, Roy & Melson, Joe
- Orbison, Roy & Roses, The
- Orbison, Roy and Teen Kings, The
- Orbison, Roy and Teen Kings, The
- Orbison, Roy and Teen Kings, The
- Orbison, Roy feat. Harris, Emmylou
- Orbison, Roy feat. lang, k.d.
- Orbison, Roy with Cash, Johnny, Lewis, Jerry Lee and Perkins, Carl
- Orbison, Roy with Royal Philharmonic Orchestra
- Orbit (Boston‐based rock band)
- orbit (German indie pop)
- Orbit (Japanese-Korean Group)
- Orbit Culture (melodic death metal/groove metal)
- Orbit Service
- Orbit, William (English musician, composer and record producer)
- Orbit, William feat. Melua, Katie
- Orbit, William feat. Orton, Beth
- Orbit, William feat. Scattergood, Polly
- Orbita Wiru (Polish rock group)
- Orbital (UK techno group)
- Orbital (atmospheric black metal band from Canada)
- Orbital & Badalamenti, Angelo
- Orbital & Hammett, Kirk
- Orbital & Lady Leshurr
- Orbital & Sleaford Mods
- Orbital & Voorn, Joris
- Orbital Alignment (Progressive Death Metal from Nottingham, UK)
- Orbital feat. Gray, David
- Orbital feat. Hammett, Kirk
- Orbital feat. Hawking, Stephen
- Orbital feat. Lady Leshurr
- Orbital feat. Little Pest, The
- Orbital feat. Mediaeval Baebes
