- O Positivo
- O Rappa
- O Town
- O'Bryan
- O'connor
- O'Donell
- O'funkillo
- O'jays
- O'Jays, the
- O'Neill
- O-Bee
- O-Town
- O-Turn
- O-Zone
- O.A.R.
- O.C.
- O.C. Smith
- O.F.T.B.
- O.G Black y Master Joe
- O.G.R.
- O.P.M.
- OAG
- Oak Ridge Boys
- Oakenfold
- Oakey Philip and Moroder Giorg
- Oakland
- Oar
- Oasis
- Obby y Math
- Obed Martinez
- Obed Music the Baby Ohu
- Obie Bermudez
- Obie Trice
- Obie Trice featuring Busta Rhy
- Obie Trice featuring D-12
- Obie Trice Featuring D12 & Emi
- Obie Trice featuring Dr. Dre &
- Obie Trice featuring Eminem
- Obie Trice Featuring Eminem &
- Obie Trice featuring Eminem &
- Obie Trice Featuring Jadakiss,
- Obie Trice featuring Kon Artis
- Obie Trice featuring Nate Dogg
- Obie Trice featuring Timbaland
- Obie Vermudez
- Obituary
- Objetivo Birmania
- OBK
- Oblivion
- Obrint Pas
