Manuel Nazareth da Costa e Sousa (born 18 September 1962), known as Necas, is an Angolan retired basketball player and current coach.

Playing as a shooting guard, Necas was best known for his sharp three-point shooting thus becoming one of the best in this category, along with Víctor de Carvalho.

He served as assistant coach of Angolan side Interclube.

[1] On 5 July 2021, Necas took over as head coach of Primeiro de Agosto.

[2] He won the 2020–21 Taça de Angola with Primeiro, beating his former team Interclube in the final.