- O
- OO
- OO
- OO
- OO
- oOak
- OakObe
- ObeObl
- OBLOC
- OCOce
- OceOCN
- OCn
- OctOdd
- OddOde
- OdeOdo
- OdoOet
- OetOff
- OffOff
- OffOgl
- OglOh
- OhOHK
- OhlOis
- OisOK
- okoki
- OKIOl
- OlOld
- OldOld
- OldOle
- OleOli
- OliOli
- OliOlm
- OlmOLU
- OluOma
- Ome
- OmeOmn
- OmnOn
- OnOnd
- One
- OneOne
- OneOne
- OneOni
- OniOnl
- OnlOny
- OnyOos
- OosOpe
- Opeopi
- OPLoqb
- OQuOra
- OraOrb
- OrbOrc
- OrcOrd
- OrdOre
- OreOri
- OriOri
- oriOrl
- OrlOro
- OroOrq
- OrqOrt
- OrtOry
- OryOsb
- OsbOSE
- OSEOsm
- OsmOst
- OstOTF
- OtgOtr
- OtrOtt
- OttOui
- OuiOus
- OutOut
- OutOut
- OutOut
- OutOve
- OveOVE
- OVEOwe
- OweOwl
- Owl
- Oze
- OzeOZw
- ozz
- Overdream (metal/rock)
- Overdrive (Swedish metal band)
- Overdrive (NWOBHM band)
- OverDrive Division
- Overdrive Orchestra
- Overdrivers
- Overflash
- Overflow (Croatian punk band)
- Overflow (South Carolina Christian pop/rock band)
- Overfuzz
- Overground (German boygroup)
- OVERGROUND ACOUSTIC UNDERGROUND
- Overgrown (United kingdom)
- Overhand, Sam
- Overhead (French band)
- Overhead (Finnish progressive rock band)
- Overhook (Alternative Fairymare)
- Overkill (US thrash metal band fronted by Bobby “Blitz” Ellsworth)
- Overlake
- Overland (band featuring Steve Overland)
- Overland, Steve
- Overlanders, The
- Overlife (Progressive Metal, Spain)
- Overload (UK punk band)
- Overload (Pakistani rock band)
- Overload (Swiss thrash metal band)
- Overload feat. Ali, Shafqat Amanat
- Overlord (Chilean melodic thrash/death metal)
- Overlord SR
- Overlorde
- Overlords, The (Danish Synth-pop / EBM / electro / techno / goa trance project)
- Overman, Charlie
- Overmars (French metal band)
- Overmaster (Power Metal, Alessandria, Piedmont, Italy)
- Overmono (brothers Tom & Ed Russell (Truss & Tessela))
- Overmono & Kindora
- Overmono & Streets, The
- Overmono feat. St. Panther
- Overmyer, Amanda
- Overnight
- Overo
- Overpade
- overpade (michael; soundcloud)
- overpade & Ajalaii
- overpade & Morg, Captain
- overpade & Muchi
- overpade & redveil
- overpade & Senju, Lando
- overpade, skaiwater & Nimstarr
- Overpass (successor to California Punk Band 'Slovenly')
- overpass (British band, Birmingham)
- Overpower (Bristol UK cross-over thrash band)
- overrated (Hardcore music artist)
- Overrides, The
- Overscene
- Overseer (English DJ/producer)
- Overseer, The (American Christian metal band)
- Overself
- Oversense
- Overshock
- Oversize
- Overslept, The
- Overslept, The feat. Broken Brass Ensemble
- OverSoul (chillout)
- OverSoul feat. Gram’ma Funk
- Overstreet (Alt-Pop-Rock project of Chord Overstreet.)
- Overstreet, Paul (country singer and songwriter)
- Overstreet, Tommy
- Overstreet, Willard
- Overthrone
- Overtime (American hip hop/country)
- Overtime & Chez
- Overtime & Martin, Austin
- Overton
- Overton, Bill
- Overton, Ethan × Coopex × LIANN
- Overton, Karen
- Overtone (South African a capella group)
- Overtones, The (UK founded (from X Factor) vocal harmony group)
- overtonight (alternative artist)
- overtonight
- Overtop (Brazilian Metal Band)
- Overtorture (Death Metal from Sweden)
- Overtoun
- Overture (Progressive Metal, Los Angeles, California, United States)
- Overture (Spanish Modern Metal Band)
- Overtures (Italian metal band)
- Overtures, The (60s tribute band)
- OVERWERK (Canadian DJ)
- OVERWERK feat. Black Atlass
