By Surname: o
Important note: inclusion on this index does not imply anything about the sexual orientation of the person - they may have expressed an opinion on homosexuals or lesbians, have written a book on the subject, or someone else may have mentioned them in a newspaper cutting.
- Edna O’ Brien
- Tom O’ Carroll
- Gilbert O’ Sullivan
- Sean O’Brien
- Des O’Connor
- Sinead O’Connor
- Josie O’Dywer
- Paul O’Grady
- Scott O’Hara
- Georgia O’Keeffe
- Phillip Oakes
- Melvin Oakes
- Ann Oakley
- Mark Oaten
- Doris Odlum
- Derek Ogg
- Maurice Oldfield
- Renate Olins
- Laurence Oliphant
- Laurence Olivier
- Richard Olland
- Aristotle Onassis
- Christina Onassis
- Jacqueline Onassis
- Marc Oraison
- D. Oriel
- Joe Orton
- George Orwell
- John Osborne
- Ozzy Osborne
- Cyril Osbourne
- Herman Ousley
- Peter Owen
- Wilfred Owen
- Ken Oxford
- Charles Oxley