Name
- O'Connor, Clarence Patrick, singer, 1899-19971
- O'Donnell, R P, Royal Air Force officer; musician and band-master, fl mid 20th century1
- Offenbach, Charles Alex, alias 'René', grandson of Jacques Offenbach, 1867-19371
- Offenbach, Jacques, composer, 1819-18801
- Ogdon, John Andrew Howard, pianist, 1937-19891
- Oldham, Arthur William, composer and choirmaster, 1926-20031
- Olegario, Frank, actor and singer, 1929-1988, http://isni.org/isni/000000...1
- Olof, Theo, musician and writer, 1924-2012, http://isni.org/isni/000000...1
- Olof, Victor, musician and record producer, 1898-19741
- Ormandy, Eugene, conductor, 1899-19851
- Ottaway, Hugh, writer on musical subjects, 1925-19791
- Samek, Victor Oliver, actor and comedian, 1898-19641