Producers [ O ]
- O.Bryan
- Oliver ‘Oli Dread’ Galbierz
- One Love Hi Pawa
- One Love Hi Pawa Sound System
- Oneil Brown
- Orett ‘ZJ Bambino’ Hart Jr & Justin ‘Jus Bus’ Nation
- Orrett 'Bambino' Hart
- Osbourne ‘King Tubby’ Ruddock
- Osbourne ‘King Tubby’ Ruddock & Hugh ‘Redman’ James
- Ossie Ranks
- Oswald ‘Ossie’ Hibbert
- Oswald ‘Ossie’ Hibbert & D Boothe
- Oswald ‘Ossie’ Hibbert & W Jones
- Oswald ‘Ossie’ Thomas
- Oswald ‘Ossie’ Thomas & Phillip Morgan
- Oswald ‘Ossie’ Thomas & Triston Palmer & K Robb
- Oswald Thomas
- OT
- Overlord X
- Owen Brown & G Nicholson
- Owen Brown & T Lyn
- Owen Rennalls