Joaquim Alberto da Silva (4 March 1974 – 15 April 2019), known as Quinzinho, was an Angolan footballer who played as a striker.
He spent the vast majority of his career in Portugal and China, amassing Primeira Liga totals of 123 matches and 28 goals during seven seasons in the former country.
He also competed professionally in Spain.
Quinzinho appeared for Angola in two Africa Cup of Nations tournaments.