Artists
- O M 1
- O Yuki Conjugate
- Obgon
- Objekt
- Obsolete Music Technology
- Obstler
- Oceaneer
- Oceanic
- Och
- Octachoron
- Octo Octa
- Octo Octa
- Octual
- Octual, Sinfol
- Oculus
- Odd Okoddo
- Odd Okoddo (Olith Ratego/Sven Kacirek)
- Odd Oswald; Stephan Barnem
- Odete
- Odori
- Odyzë
- Ofege
- Oh, Yoko
- OID
- OID, Dj Koze
- OID, Jake the Rapper
- Oklo Gabon
- Oklo Gabon, rRoxymore
- Olaf Orbit
- Olan!
- Older Lover
- Oleg Kostrov
- Oleg Poliakov
- Olga Melchionda
- Olivander
- Oliver Deutschmann
- Oliver Hacke
- Oliver Klein & Kolombo
- Oliver Klein, Kolombo
- Oliver Klostermann
- Oliver Osborne
- Oliver Rosemann
- Oliver Schories
- Om
- Om Buschman
- Omar
- Ominous; Pattern Drama; Ray Zuniga
- Omnious
- Omri Smadar
- On+Brr
- Once11
- Oneohtrix Point Never
- Oni Ayhun
- Oniris
- Onmutu Mechanicks
- Onur Özer
- Onze
- oOoOO
- oOoOO & Islamiq Grrrls
- oOoOO, Islamiq Grrrls
- Opal Sunn
- Opolopo
- Optimo
- Oracy
- Orbite
- Oren Ambarch, Will Guthrie
- Oren Ambarchi
- Oren Ambarchi & Will Guthrie
- Oren Ambarchi, Jim O'Rourke & Keiji Haino
- Oren Ambarchi, Kassel Jaeger & James Rushford
- Oren Ambarchi, Kassel Jaeger, James Rushford
- Oren Ambarchi, Konrad Sprenger, Phillip Sollmann
- Oren Ambarchi, Will Guthrie
- Oresm
- Organs of Love
- Orla Wren
- Ormonde
- Orson Wells
- Orson Wells & Benjamin Milz
- Oscar Schubaq
- Osclighter
- Oscligther
- Oska Wald & Lorenz O’toole
- Oskar Offermann
- Ost & Kjex
- Osunlade
- Otherfucka
- Otto
- Otto Lindholm
- Out Of Plato's Cave
- Outcome
- Oxia
- Oxia/ Intus
- Oxtongue
