Interpreten Buchstabe O
- O'Connor, Hazel
- O'Connor, Sinead
- O'Sullivan, Gilbert
- O-Band
- O-Town
- O.M.D. (Orchestral Manoeuvres In The Dark)
- Oasis
- Ocean
- Ocean, Billy
- Oceana
- Off
- Offspring
- Of Monsters And Men
- Ohio Express
- Oldfield, Mike
- Oli.P
- Olive
- Oliver Cheatham
- Olivia Newton-John
- Olly Murs
- OMC
- Omega
- One Direction
- OneRepublic
- Oomph!
- OPM
- Ora, Rita
- Orange Blue
- Orchestre Rouge
- Orianthi
- Orishas
- Orson
- Osibisa
- Osment, Emily
- Other Ones
- Outfield
- Outlandish
- Owl City