- O
- OO
- OO
- OO
- OOaf
- OAFOaK
- OakOBE
- ObeObn
- OBO
- Oce
- OceOCS
- OCTOct
- OctOdd
- OddODE
- ODEOdo
- OdoOf
- OfOff
- OffOff
- OffOgr
- OgrOh
- ohOHM
- OHNOiz
- OizOka
- OkaOkl
- OklOla
- OlaOld
- OldOld
- OldOle
- OleOli
- OliOli
- OliOls
- OlsOm
- OMOma
- OmaOme
- OmeOMO
- OmoOna
- OnaOne
- ONEONE
- ONEOne
- OneONE
- ONEOnl
- OnlOns
- OnsOol
- OolOpe
- OpeOPF
- OpgOpt
- OptOra
- OraOrb
- OrbOrc
- Orcorc
- orcOre
- OreOrh
- OrhOri
- OriOrk
- OrkOrn
- OrnOrq
- OrqOrs
- OrsOrt
- OrtOsb
- OsbOsc
- OscOsl
- OslOst
- OstOte
- OteOTR
- OTROtt
- OttOud
- OueOur
- OurOut
- OUTOut
- OutOut
- OutOve
- OveOve
- OveOwe
- OweOwl
- OwlOxo
- Oxo
- OzOzu
- ozwozz
- OffTopic (Connecticut hip hop)
- Oficina Blues
- Oficina G3 (Brazilian Christian band)
- Ofili
- OFK (We are OFK)
- OfMan, Lewis
- OfMan, Lewis & Jepsen, Carly Rae
- OfMan, Lewis feat. Camille Jansen
- OfMan, Lewis feat. Empress Of
- OfMan, Lewis feat. Reid, Alaska
- OfMan, Lewis feat. Richardson, Gabriela
- OfMan, Lewis feat. Royer, Sofie
- Ofner, Dominik (Austrian Singer, Band, Folk, Pop)
- Ofnus (atmospheric black metal band from Wales)
- Ofodu, Ogechi (Also known as OG, Igbo Nigerian Pop-Rap/Hiphop Rapper and Singer)
- Oforia (Israeli goa trance/psytrance DJ/producer Ofer Dikovsky)
- Ofrin (Israeli singer based in Berlin, Germany and Tel Aviv, Israel)
- Ofrin (Ori Rousso)
- oftn
- OG Bobby Billions
- OG BraX (Swiss rapper)
- OG Buda (Russian rapper)
- OG Buda & 163ONMYNECK
- OG Buda feat. lil krystalll
- OG Florin (Swiss rapper)
- OG Hindu Kush
- OG Ikonen
- OG Keemo (German rapper)
- OG Keemo & Kwam.E
- OG Keemo & Liam, Levin
- OG Keemo & Souly
- Og Kush Salamanda (Lazy Lizzard Gang member)
- Og L'enf (French rapper, Eddie Hyde)
- OG LOCKE
- OG LU
- OG Maco
- OG Maco & Key
- OG Prince (Russian rapper)
- OG Ron C (Texas-based Swishahouse member & screw DJ Ronald Coleman)
- OG Semi-Auto feat. Lepht
- OG Semi‐Auto (US rapper from Denver, CO)
- Óg, Gary
- Ogada, Ayub
- Ogando, Gabriel
- Ogata, Megumi
- Ogawa, Michiko, Trio, The
- Ogawa, Noriko (pianist)
- OGB
- Ogbert the Nerd
- Ogbon, Lord Jah‐Monte (US rapper a.k.a. Jah‐Monte)
- Ogbon, Lord Jah‐Monte feat. YL
- Ogden Edsl
- Ogden, Craig (guitarist)
- Ogden, Jonathan
- Ogden, Jonathan feat. Lubangu, Praise
- Ogdon, John (pianist and composer)
- Ogeday
- Ogee (Metal guitar player)
- Ogee (French singer‐songwriter)
- Ogemaw County (Detroit, Michigan based metalcore act)
- Ogen
- Ogeret, Marc
- Ogerman, Claus, Orchestra , The
- Ogfrankie
- Oghre (Metal band from Rīga, Latvia)
- Oghu & DuBois, Marlon
- OGI (Brazilian)
- Ogi (Nigerian‐American singer, songwriter and multi‐instrumentalist)
- Ogi, DJ
- Ogier, Emma (Nashville-based singer-songwriter)
- Ogikubo Station
- Ogilvie, George
- Oginome, Yoko (Pop idol, actress & voice actress)
- OGK4Lyf
- Oglesby, Erskine
- Ogletree, Troy (indie-pop singer/songwriter)
- OGM (UK house)
- Ognevich, Zlata
- ogoin
- ogoin & Linguini
- OGR-Scintilla
- OGR-Scintilla ft. Young Poutine
- Ogre (Stoner group from Raymond, ME, United States)
- Ogre Packet Slammers, The (Deathcore)
- OGRE Sounds
- Ogre You Asshole
- OGRE, Sound (Composer & sound designer from UK, Robin Ogden)
- Ögren, Daniel
- Ogres de Barback, Les
- Ogres de Barback, Les & Csókolom feat. Borki, Gavrish
