João Antonio Peixoto Primo, also known as Primo Jr. or simply Primo (Rio Grande, 23 March 1933) is a Brazilian pianist and band leader mainly active from the late 50s to the early 70s.

A short description of Primo's career is present in the text Um milhão de melódicos melodiosos – ou: os anos de transição (in Portuguese) by gaucho musician and writer Arthur de Faria.