- O
- OO
- OO
- OO
- OOaf
- OAFOaK
- OakOBE
- ObeObn
- OBO
- Oce
- OceOCS
- OCTOct
- OctOdd
- OddODE
- ODEOdo
- OdoOf
- OfOff
- OFFOfi
- OfiOgr
- OgrOh
- OhOHN
- OhnOiz
- OJOKA
- OkaOkm
- OKOOla
- OlaOld
- OldOld
- OldOle
- OleOli
- OliOli
- OLIOls
- OlsOma
- OmaOma
- Omaomg
- omgOmo
- OmoO
- OnaOne
- OneOne
- OneOne
- ONE
- OneOnl
- OnlONT
- ontOom
- OomOpe
- OpeOph
- OphOpt
- OpuOra
- OraOrb
- OrbOrc
- OrcOrc
- OrcOre
- OreOri
- OriOri
- OriOrk
- OrkOro
- OroOrq
- OrqOrs
- OrsOru
- OruOsb
- OsbOsc
- OscOSM
- OsmOst
- OstOte
- oteOtr
- OtrOtt
- OttOui
- OuiOus
- OusOut
- OutOut
- OutOut
- OutOve
- OveOVE
- OveOwe
- oweOwn
- OwnOxy
- Oxy
- OZZ
- ozzozz
- Obey City
- Obey Me! Boys (Obey Me! character group)
- Obey the Brave
- Obey the sun
- Obey, Ebenezer
- OBEYER
- Obfusc (Joseph X. Burke)
- OBGMs, The
- Obi (UK britpop band)
- Obi Best (formerly called Colorforms)
- Obia le Chef
- Obia le Chef avec Caballero & JeanJass
- Obia le Chef feat. Tizzo
- Obiat
- Obibox
- Obie Hans
- Obiedo, Ray
- Obieglo, Andreas
- Obiman
- Obin, André
- Obinrin Trio
- Obiols Campi, Arnau (Arnau Obiols Campi)
- Obispo, Pascal
- Obispo, Pascal & Angi, Giordana
- Obispo, Pascal & Cabrel, Francis
- Obispo, Pascal & Frégé, Élodie
- Obispo, Pascal & Gredy, Alexia
- Obispo, Pascal & Mars, Mélissa
- Obispo, Pascal & St-Pier, Natasha
- Obispo, Pascal avec Zazie
- Obispo, Pascal duo avec Calogero
- Obispo, Pascal feat. Baby Bash
- Obispo, Pascal feat. Calogero
- Obispo, Pascal feat. Casal, Luz
- Obispo, Pascal feat. Christophe
- Obispo, Pascal feat. Christophe
- Obispo, Pascal feat. Hallyday, Johnny
- Obispo, Pascal feat. La Troupe des Dix Commandements
- Obispo, Pascal feat. N'Dour, Youssou
- Obispo, Pascal feat. N’Dour, Youssou
- Obispo, Pascal feat. Pagny, Florent
- Obispo, Pascal feat. Stoner, Sam
- Obispo, Pascal feat. Zazie
- Obispo, Pascal, Willem, Christophe, Fiori, Patrick, Alizée
- Obito
- Obits
- Obituary (US death metal band)
- Object Unto Earth
- Objekt (TJ Hertz)
- Objektif
- Objetivo Birmania
- OBK (Spanish band)
- OBKATIEKAT
- OBLADAET (Russian rapper)
- OBLADAET & Enzo From The Block
- OBLADAET & lil krystalll
- 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
- Obliterate (Slovak grindcore)
- Obliterate (Canadian deathcore)
- Obliterations
- Obliveon
- Oblivia (Australian band)
- 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)
