Clésio Castro (born February 22, 1997) is an Angolan professional basketball player for Petro de Luanda and the Angola national team. Standing at 6 ft 7 in (2.01 m), he plays as center and is a product of the Primeiro de Agosto youth academy.

Castro came up through Primeiro de Agosto's youth ranks and eventually became a player in the senior team, playing in the Angolan Basketball League.

In the 2022–23 season, Castro played in Portugal with Sangalhos DC of the Liga Portuguesa de Basquetebol (LPB).^[1] There he joined Leonel Paulo and Jerónimo Luís, becoming the third Angolan player on the team.^[1]

Castro joined Petro de Luanda for the 2023–24 season.^[2] In May 2024, Castro was added to Petro de Luanda's roster for the 2024 BAL playoffs.^[3] He provided a massive performance in the final, scoring 10 points off the bench against Al Ahly Ly, to help Petro win their first BAL championship.^[4]

Castro made his debut for Angola in the qualification for the 2023 World Cup.^[5]