- Ompeh Ensemble
- OMPOS
- Omputer
- OMR
- Omri Anghel
- Omri Cohen
- Omri Hason
- Omri & Kadim Hason
- Omri Klein
- Omri Ziegele
- OMS
- O.M.S.
- Omthenjwa
- O.M.U.
- Omulf Gulbransen
- Omun
- Ömür Göksel
- Omurah
- OMW
- O.M.Y.
- Omy
- Omy Y Cidely
- Omynus
- Omzo
- On
- On
- On 1 Accord Ministries
- On 2
- On 3
- On a créé un monstre
- On a Cree Un Monstre
- On a Dead Machine
- On a Pale Horse
- On a Warpath
- On Air
- On An On