- Oustaaz -- Out of Frame
- Out of Grace -- Out of the Ashes
- Out of the Blue -- Out Out
- Out Profile -- Outcasts
- Outcold -- Outermost
- Outernational Meltdown -- Outl4w
- Outland -- Outlaw Son
- Outlaws Outlaws -- Output & Djoz
- Outputmessage -- Outside Brothers
- Outside Edge -- Outta Control
- Outta d' Blues -- Ouzaid
- Ouzin Ndiaye -- Oval
- Oval 5 Project -- Oveja Negra
- Ovejas -- Over the Edge
- Over The Effect -- Overdose Kunst
- Overdose Victums -- Overflow-110
- Overflow & R. Hardy Sr. -- Overlode