| Orties |
| Ortiz, Jo-Elle |
| Ortiz, Monica Quello |
| Ortiz, Mostro Quello |
| Orton, Randy |
| Orup |
| Orville Couch |
| Orville Johnson |
| Orwell |
| Os Arrais |
| Os Canabais |
| Os Cariocas |
| Os Cretinos |
| Os Gatos |
| Os Hawaianos |
| Os Ímpares |
| Os Imperfeitos |
| Os Infernais |
| Os Morenos |
| Os Mutantes |
| Os Novos Baianos |
| Os Originais Do Samba |
| Os Paralamas |
| Os Paralamas do Sucesso |
| Os Travessos |
| Osaka Popstar |
| Osamu Kitajima |
| Osamu Koike |
| Osborne & Giles |
| Osborne Brothers |
| Osborne, Georga |
| Osborne, Jeffery |
| Osborne, Tony & His Orchestra |
| Osbourne, Joan |
| Osbourne, Tony |
| Osbourne, Tony & His Orchestra |
| Oscar |
| Oscar "Papa" Celestin |
| Oscar Alemán |
| Oscar Alemán Y Los Cinco Caballeros |
| Oscar and the Wolf |
| Oscar Anderle |
| Oscar Andrade |
| Oscar Athie |
| Oscar Benito |
| Oscar Benton |
| Oscar Brown, Jr. |
| Oscar Castro-Neves |
| Oscar Castro?Neves |
| Oscar Chávez |
| Oscar Cortez |
| Oscar D'León |
| Oscar de la Hoya |
| Oscar de Leon |
| Oscar Enestad |
| Oscar Ernesto Ovejero |
| Oscar G. |
| Oscar Gaetan |
| Oscar Garrido |
| Oscar Hammerstein |
| Oscar Hammerstein II |
| Oscar Isaac |
| Oscar Klein |
| Oscar Levant |
| Oscar Lopez |
| Oscar Mack |
| Oscar Martinez |
| Oscar Moore |
| Oscar Moore Quartet |
| Oscar Neves |
| Oscar Peterson |
| Oscar Peterson & the Very Tall Band |
| Oscar Peterson Four |
| Oscar Peterson Quartet |
| Oscar Peterson Trio |
| Oscar Pettiford |
| Oscar Prince |
| Oscar Rabin |
| Oscar Rabin Band |
| Oscar Rivera |
