- O Rappa (жанр: rock)
- O-Town (жанр: pop)
- O-Zone (жанр: dance)
- O.C. (жанр: hip-hop)
- O.N.A. (жанр: rock)
- O.S.T.R. (жанр: hip-hop)
- Oasis (жанр: britpop)
- Obie Trice (жанр: rap)
- Ocean Colour Scene (жанр: britpop)
- Oceanlab (жанр: trance)
- Odroerir (жанр: folk metal)
- Odyssey (жанр: disco)
- Of Montreal (жанр: indie)
- Of The Wand And The Moon (жанр: neofolk)
- Offer Nissim (жанр: house)
- Ofra Haza (жанр: world)
- Ogie Alcasid (жанр: opm)
- OHL (жанр: punk)
- Ohmega Watts (жанр: hip-hop)
- Oi Polloi (жанр: punk)
- Oingo Boingo (жанр: new wave)
- Ojos De Brujo (жанр: flamenco)
- OK Go (жанр: indie)
- Ol Dirty Bastard (жанр: hip-hop)
- Olavi Uusivirta (жанр: finnish)
- Olive (жанр: trip-hop)
- Olivia Newton-John (жанр: pop)
- Olivia Ruiz (жанр: french)
- OM (жанр: doom metal)
- Omar (жанр: soul)
- Omarion (жанр: rnb)
- OMC (жанр: pop)
- Omul Cu Sobolani (жанр: alternative)
- One Chance (жанр: rnb)
- One Minute Silence (жанр: metal)
- Onslaught (жанр: thrash metal)
- Onyx (жанр: hip-hop)
- OOMPH! (жанр: industrial)
- Opgezwolle (жанр: nederhop)
- Opiate For The Masses (жанр: metal)
- OPM (жанр: alternative)
- Orange And Lemons (жанр: opm)
- Orange Goblin (жанр: stoner rock)
- Orange Juice (жанр: post-punk)
- Orchestral Manoeuvres In The Dark (жанр: new wave)
- Organism 12 (жанр: hip-hop)
- Organized Konfusion (жанр: hip-hop)
- Orgy (жанр: industrial)
- Origa (жанр: anime)
- Origin (жанр: death metal)
- Orion (жанр: psytrance)
- Orson (жанр: indie)
- Orup (жанр: swedish)
- Ossian (жанр: heavy metal)
- Otep (жанр: metal)
- Ott (жанр: dub)
- Ottawan (жанр: disco)
- Otto Ohm (жанр: italian)
- Otyg (жанр: folk metal)
- Outkast (жанр: hip-hop)
- Outlandish (жанр: hip-hop)
- Outlawz (жанр: rap)
- Overkill (жанр: thrash metal)
- Overseer (жанр: electronic)
- Oxymoron (жанр: oi)
- Ozark Henry (жанр: belgian)
- Ozi (жанр: house)
- Ozma (жанр: indie)
- Ozzy Osbourne (жанр: heavy metal)