- Oscar Peterson Trio
- Oscar Pettiford
- Oscar Pettiford Quintet
- Oscar Pistorius
- Oscar "Pitin" Sanchez Y La...
- Oscar Platt
- Oscar Poche
- Oscar Prudente
- Oscar Quesada
- Oscar Quijano
- Oscar R. Casares
- Oscar Rabin
- Oscar Rabin And His Romany Band
- Oscar Rabin & His Orchestra
- Oscar R.Acevedo/Rupert S.Salazar
- Oscar Ramirez
- Oscar Ramos
- Oscar Rasbach
- Oscar Ravina
- Oscar Ray "David Ray" Smith
- Oscar Reynolds
- Oscar Rhenals Acevedo
- Oscar Rivera
- Oscar Rizo Y Conjunto Barroco
- Oscar Roberto Casares
- Oscar Rubio y Su Banda Canela
- Oscar Rundqvist
- Oscar S. Reynolds
- Oscar Sahonero
- Oscar Sainz
- Oscar Salgado
- Oscar Salguero
- Oscar Salguero
- Oscar Salinas
- Oscar Sanders
- Oscar Santana
- Oscar Seaton Jr.
- Oscar Segura
- Oscar Serpa
- Oscar Serrano
- Oscar Sharp
- Oscar Shaw
- Oscar "Shorty" Shehan
- Oscar Snow
- Oscar Solo
- Oscar Stagnaro
- Oscar & Stereofreak
- Oscar Straus
- Oscar Strock
- Oscar Suescún
- Oscar Sulley
- Oscar Sulley and the Uhuru Dance Band
- Oscar Tellez
- Oscar Tharpe
- Oscar the Grouch
- Oscar & The Majestics
- Oscar "The Smooth One" Sheppard
- Oscar Thiffault
- Oscar Ticas
- Oscar Toney Jr.
- Oscar Toscano
- Oscar Toscano y su Orquesta
- Oscar Trio
- Oscar Utterström
- Oscar Valdés
- Oscar Van Dillen
- Oscar Vidal
- Oscar Villon
- Oscar Walden Quintet
- Oscar Walden Sextet
- Oscar Wallas
- Oscar Walter Gattaz
- Oscar Washington's New Wave...
- Oscar Weathers
- Oscar Wells & the Trailblazers
- Oscar Werner
- Oscar White
- Oscar Wilde
- Oscar Wilde
- Oscar Williams