- Oregon Falls
- Oregon Guitar Quartet
- Oregon Jazz Band
- Oregon Repertory Singers
- Oregon Reportory Singers
- Oregon Series Players
- Oregon Symphony
- Oregonized
- O'Regulate
- O'Rei
- Oreja
- Oreka TX
- Orekhov S.
- Orel
- Orelha Negra
- Orelhador De Cordeona
- Orelipoiss
- Orella Myers
- Orellana
- OrelSan
- Orelse
- Oremus
- Oren Ambarchi
- Oren and the Hiccups
- Oren Barkan
- Oren Barkan
- Oren Barkan
- Oren Barkan Presents Kamura
- Oren Bloedow
- Oren Fader
- Oren Fader
- Oren Jay Sofer
- Oren Lavie
- Oren Maizlin
- Oren Marshall
- Oren Neiman
- Oren Rosenthal
- Oren Shitrit
- Oren Storey
- Oren Tikkanen
- Oren Waters
- Oren Yoel
- Orenda
- Orenda Fink
- Orenstein
- OrenTikkanen
- Orents Stirner
- O.R.E.O.
- Oreo
- Oreskaband
- Orest Balaban
- Oresta Cybriwsky