- Oswaldo Montenegro
- Oswaldo Nunes
- Oswaldo Pereira
- Oswaldo Pinto Tropical Sounds
- Oswaldo Rodriguez
- Oswaldo Santiago
- Oswaldo Sosa Cordero
- Oswaldo Y Su Grupo Coco
- Oswando
- Oswego
- Oswego Jazz Project
- Oswin Chin Behilia
- OSY
- Osylver Beat Man
- Osylver Project
- Osymyso
- Osyrus
- Osyssey
- Öszibarack
- Oszillator5
- Oszkár Maleczky
- Oszkar Maleczky
- Oszkar Okros
- OT
- OT 2006
- OT 2008
- O.T. and The Swingstuff Inc.
- O.T. And Young Jay
- Ot Azoj
- Ot Azoj Klezmerband
- Ot Azoy Klezmerband
- O.T. Coffin
- Ot Danum
- O.T. Quartet
- Ot. To 777
- O.T. Zehn