 |  O'Brien, Joan  Actress / Singer |
|
 |  O'Connor, CoCo  Singer | |
 |  O'Connor, Sinéad  Singer | |
 |  O'Day, Aubrey  Singer / Songwriter | |
 |  O'Donis, Colby  Singer | |
 |  O'Donnell, Daniel  Singer | |
 |  O'Donohue, Becky  American Idol Contestant / Singer | |
 |  O'Meara, Jo  Singer | |
 |  O'Neil, Melissa  Singer / Actress | |
 |  O'Neill, Brian  Singer / Actor | |
 |  Oakenfold, Paul  Actor / Singer | |
 |  O’ Neill, Harper  Singer | |
 |  O’Neal, Jamie  Singer | |
 |  O’Sullivan, Gilbert  Singer / Songwriter | |
 |  Obika, Lemar  Singer | |
 |  Obispo, Pascal  Singer | |
 |  Ocean, Billy  Singer / Songwriter | |
 |  Ocean, Frank  Singer | |
 |  Oceana  Singer | |
 |  Ochsenknecht, Jimi  Singer / Actor | |
 |  Oda, Sophie  Actress / Singer | |
 |  Odell, Tom  Singer | |
 |  Odetari  Singer | |
 |  Odmark, Matt  Guitarist / Singer | |
 |  Oerding, Johannes  Singer | |
 |  Offerman, Catie  Singer | |
 |  Offor, Blessing  Singer | |
 |  Ogi  Singer | |