Ângelo César Cardoso de Sousa (2 February 1938 – 29 March 2011) was a Portuguese painter, sculptor, draftsman and professor, better known for continuously experimenting with new techniques in his works.

[citation needed] He was born in Lourenço Marques (now Maputo) in 1938 and in 1955 he moved to Porto where he enrolled in the School of Fine Artes.

[1] His academic excellence led him, along with Armando Alves, Jorge Pinheiro and José Rodrigues, to become part of a group known as "Os Quatro Vintes" (Portuguese for "The Four Twenties").

Prior to teaching, de Sousa had his first solo exhibition in 1959 and since then his works have been shown worldwide.

Some of his drawings illustrate books by Eugénio de Andrade, Maria Alzira Seixo, Mário Cláudio, Fiama Hasse Pais Brandão, amongst others.