O
- Vidna Obmana
- Obsil
- Odd Nosdam
- Patrick O'Hearn
- Mike Oldfield
- Coyote Oldman
- Omar Rodriguez Lopez
- Ombient
- Omni Trio
- On! Air! Library!
- Open Canvas
- The Orb
- William Orbit (Strange Cargo series)
- Orbital
- O Yuki Conjugate
- Ott (record producer)
Read more about this topic: List Of Ambient Artists