- O
- OO
- OO
- OO
- OO
- OOak
- OakObe
- ObeObl
- OblObs
- OBSOce
- OceOch
- OchOct
- OctOdd
- OddOde
- OdeOdi
- OdiOdy
- OdyOfe
- OfeOff
- OffOga
- OgaOh
- OhOha
- OhaOi
- OiOjo
- OjoOka
- OkaOku
- OkuOla
- OlaOld
- Oldold
- OldOle
- OleOli
- OliOli
- OLIOls
- OlsOM
- omOma
- OmaOme
- OmeOmn
- OmnOn
- OnOne
- OneOne
- OneOne
- OneOne
- OneONL
- ONLOno
- OnoOob
- OOcOP
- OpaOpe
- OpeOpp
- OppOr
- OrOra
- OraOrb
- OrbOrc
- OrcOrd
- OrdOrf
- OrfOri
- OriOri
- OriOrl
- OrlOro
- OroOrq
- OrqOrt
- OrtOrx
- OryOsb
- OsbOse
- OseOsm
- OsmOst
- OSTOte
- OteOto
- OtoOtt
- OttOu
- OuaOUR
- OurOut
- OutOut
- OutOut
- OutOve
- OveOve
- OveOvt
- OvvOwe
- OweOxh
- OxiOza
- OzaOzo
- OzoOZZ
- Ohashi, Ayaka
- Ohashi, Chippoke
- Ohashi, Junko
- ohashiTrio
- Ohasis (Oasis Tribute band from Nottingham)
- Ohbijou
- Ohead (UK psy‐trance producer Dave Hendry)
- OhEm
- Ohemaa Mercy
- Ohen (slovakian black metal)
- Ohene
- OHEY
- OhGeesy
- OhGeesy & Kalan.FrFr
- OhGeesy feat. BIA
- OhGeesy Feat. Boogie Wit da Hoodie, A
- OhGeesy feat. Cash Kidd
- OhGeesy Feat. Central Cee
- OhGeesy Feat. DaBaby
- OhGeesy feat. Kalan.FrFr
- OhGeesy feat. Tyga
- ohGr (electro-industrial band)
- Ohguro, Maki
- Ohhms
- Ohio Express
- Ohio Players
- Ohio State University Marching Band
- Ohio University Marching 110
- Ohioan
- Ohishi, Rumi
- OHKABE (Canadian Artist)
- Ohkawa, Mizuki (riparia records)
- OHKAYA
- Ohlenbusch, Henning (singer/songwriter)
- Ohlin, Ari
- Ohlman, Christine & Montez, Rebel
- Ohm Guru
- Ohm-I (Leron Gray)
- Ohm-N-I
- Ohmama, Takashi
- Öhman Organ Grinders (Kjell Öhman; Ulf Andersson; Claes Janson; Thomas Arensen; Tommy Johnson & Douglas Westlund)
- Öhman, Kjell (Swedish jazz musician)
- Ohmie feat. BVLVNCE
- Ohmio
- Ohmna
- Ohmori, Motoki (Motoki Ohmori)
- Ohmori, Yohei
- OHMS (heavy/stoner rock band from Argentina)
- Ohms, The
- Ohmura, Takayoshi
- OHMYMEITING & Lee, Marcus
- OHMYMEITING & MFMF.
- OHN
- OHNA (Newcastle, Australia)
- OHNO (LA latino rapper)
- Ohno, Aika
- Ohno, Eri
- Ohno, Katsuo
- Ohno, Katsuo & Ohno, Katsuo
- Ohno, Yuji (anime music composer and jazz pianist)
- Ohno, Yuji & Lupintic Five
- Ohno, Yuji & Lupintic Five with Friends
- Ohno, Yuji & You & The Explosion Band
- Ohno, Yuji feat. Keida, Akemi
- Ohno, Yuji feat. Kurahashi, Ruiko
- Ohno, Yuji, Trio
- OhNos, The
- OHO (Trip-Hop/Folk/Electronica)
- OHO
- Oho, The (Finnish band)
- OHora, Zephaniah
- OHR (Seattle based psych solo project of Craig Klein.)
- Ohrage
- Ohrbooten
- Ohrenfeindt
- Ohrima
- Ohta, Mitsuhiro
- Ohta, Takako
- Ohtaki, Eiichi
- Ohtani, Tomoya, Eguchi, Takahito feat. Barnitt, Quinn
- Ohtar (Polish black metal)
- Ohtis
- Ohuchi, Yoshiaki
- ohyeahsumi
- OHYUNG
- OHYUNG & STEFA*
- Oi Polloi
- Oi Va Voi (British band)
- Oi Va Voi feat. Zinger, Earl
- Oi-Melz
