- O
- OO
- OO
- OO
- OO
- OOak
- OakObe
- ObeOBL
- OblObs
- Obsoce
- OceOce
- oceOct
- OctOda
- OdbOdd
- OddOde
- OdeODU
- ODUOf
- OfOff
- OFFOfi
- Ofiogo
- OGROh
- OhOhi
- OhiOIL
- OilOk
- OkOke
- OkeOl
- OlOla
- OlaOld
- OldOl
- OlOlg
- OlgOli
- OliOli
- OliOls
- OlsOMA
- OmaOma
- OmaOme
- OmeOmn
- OmnOn
- OnOne
- ONEOne
- OneOne
- OneOne
- OneONJ
- OnkOnn
- ONOOny
- OnyOos
- OosOpe
- OpOpi
- OpiOpu
- OpuOra
- Oraorb
- OrbOrc
- OrcOrc
- OrcOre
- OreOrh
- OrhOri
- ORIOrk
- OrkOrn
- OrnOrq
- OrqOrr
- OrrOrt
- OrtOsa
- OsaOsc
- OscOsk
- OskOss
- OssOT
- OtaOth
- OthOtt
- OttOtt
- OttOur
- OurOut
- OutOut
- OutOut
- OutOv
- OvOve
- OveOve
- OveOwe
- OweOwl
- OwlOxl
- Oxl
- OzaOzo
- OzoOzz
- Obladaun (Russian parody rap)
- Oblea, Mark (Filipino Artist)
- obli (US multi-instrumentalist and electronic producer)
- Obligaatiot
- Obligatorisk Tortyr
- Obliging Victims, The
- Oblio (Alt-rock trio based in Pasadena California)
- Oblique (New Wave/Electronic)
- Oblique (synthwave, on" Ladies of Synth" RetroSynth compilation)
- Oblique (Bangladeshi band)
- Oblique Brown
- Oblisk
- Obliterate (Slovak grindcore)
- Obliterate (Canadian deathcore)
- Obliterations
- Obliveon
- Oblivian, Jack (US musician Jack Yarber)
- Oblivians (US garage punk trio)
- Oblivion (Chicago punk band)
- Oblivion (Blackened Technical Death Metal from the Bay Area)
- Oblivion (French Heavy Metal with two formers members from Nightmare)
- Oblivion (New Jersey thrash metal band)
- Oblivion (US metal band from Bay Area, California)
- OBLIVION DUST
- Oblivion Machine
- Oblivion’s Mighty Trash (Colombian rapper)
- Oblomov (Czech experimental black/death metal band)
- Oblon, Jim (LA/Nashville guitarist, drummer)
- OBLVYN
- OBLVYN & RIELL
- OBLVYN & Røyale
- OBLVYN & wayfie
- OBN Dev
- ObnoXiouS (Dutch metal band)
- OBO (German flamenco guitarist)
- Obo & Jorge
- Obojeni program
- Obongjayar
- Obongjayar & Sarz
- Obongjayar feat. Garcia, Nubya
- Obongjayar feat. Little Simz
- OBOY (French rapper, Mihaja Ramiarinarivo)
- OBOY feat. SCH
- Obradors, Fernando
- Obray Ramsey (folk musician and banjo player)
- obraza net (Russian electro-punk band)
- Obregon, Juan (from Venezuela, Obregon Music, Obregon hand move)
- Obrero
- Obrint Pas
- Obroa-skai (screamo band from Canada)
- OBS (German DJ duo)
- Obscene Eulogy (Canadian black metal)
- Obscene Illusion (Swedish death metal band)
- Obscene Worship
- Obscenity (German death metal band)
- Obscenity Trial
- Obscura (technical death metal band from Munich, Germany)
- Obscura Hail
- Obscura Qalma (Symphonic death metal from Venice, Italy)
- Obscura Religio
- Obscurcis Romancia
- Obscure (Bangladeshi band)
- Obscure of Acacia
- Obscure Sphere
- Obscure Sphinx
- Obscurest Vinyl (parody music)
- Obscurity (black/Viking metal band from Germany)
- Obsequiae
- Observatory, The (US rock band from Athens, Georgia)
- Observatory, The (Singaporian space rock)
- Observe & Control
- Observer (Shoegaze)
- Observer Drift
- Obsesion, La (La Obsesión Factory)
- OBSESS
- Obsessed, The (doom metal music)
- Obsession (UK dance remakes for Almighty Records)
- Obsession (New Haven, CT metal)
- Obsession (Frernch Heavy Metal / Hard Rock)
- Obsessive (1990s techno/trance artist David Lübner)
- Obsessives, The
- Obsidia (Dubstep/Dubstyle/Drum & Bass/Electronic Producer from the UK)
- Obsidian (Dutch death metal band from Amsterdam)
- Obsidian Gate (German symphonic black metal band)
- Obsidian Kingdom
- Obsidian Mantra (Polish Prog Death Metal)
- Obsidian Mind
- Obsidian Shell
- Obsidian Shrine
- Obsidian Tide
