Artists
- Ozuna
- Ozone
- Alexandre Ouzounoff
- Beccy Owen
- Benjamin Ottewell
- Boots Ottestad
- Clyde Otis
- Conesha Owens
- Cristobal Oudrid
- Curtis Ousley
- Donny Osmond
- Doug Owen
- Dustin O’Halloran
- Edna Osser
- Edward Oxenford
- Fernand Oubradous
- Frederick Arthur Gore Ouseley
- Georg Ots
- George O’Dowd
- Georgia Ku Overton
- Gilbert O’Sullivan
- Harrison Oxley
- Harry Owens
- Hazy Osterwald
- Horace Ott
- Hugh Ottaway
- Idloes Owen
- Inger Otzen
- J Owen
- Jack Owens
- James Oswald
- Jens-Peter Ostendorf
- Jimmy Osmond
- Joan Osborne
- Jof Owen
- John Osbourne
- John Owen Edwards
- John Oxenford
- John O’Donnell
- Johnny Otis
- K G Ossiannilsson
- Kathryn Ostenberg
- Kelly Osbourne
- Kerstin Ott
- Knud Overgaard
- Kobi Oshrat-Ventoora
- Lee Oskar
- Leslie Osborne
- Mark Owen
- Mark O’Toole
- Martin Outram
- Matthew Owens
- Michael Owuo Jr.
- Morfydd Owen
- Nan O’Byrne
- Ozzy Osbourne
- Paul Overstreet
- Paul Oxley
- Paul O’Duffy
- Paul van Ostaijen
- Reginald Osborne
- Ricardo Ozán
- Rodolfo Ovejero
- Roger O’Donnell
- Shuggie Otis
- Stephen O’Brien
- T Osborne Roberts
- Tebey Ottoh
- The Osmonds
- Three Ounces Of Love
- Tommy Overstreet
- Turlough O’Carolan
- Two Oxonians
- Wilfred Owen
- Étienne Ozi