Joaquim Alberto Silva (4 March 1974 – 15 April 2019), known as Quinzinho, was an Angolan footballer. He played as a striker. He appeared for Angola in two Africa Cup of Nations tournaments. He played for the team from 1994 to 2001. He also played for Porto from 1995 to 2001.
On 15 April 2019, Quinzinho felt ill after jogging in Alverca do Ribatejo and died shortly after at the age of 45.