César Augusto Aquino de Castro[a] (born September 2, 1982) is a Brazilian competitive diver from Brasília, Distrito Federal.

Cesar Castro was the first Brazilian diver to receive a medal in an International Fédération internationale de natation (FINA) Diving Grand Prix.

Moreover, César Castro won four medals in the 2005 World University Games in İzmir Universiade, Turkey and holds the total of twelve medals of FINA International diving Grand Prix from the years 2002 to 2015.

On the international diving stage, Cesar Castro qualified for and represented the Brazilian national Team at several distinguished international competitions such as the Pan American Games, FINA World Championships, FINA Diving World Cup, World Series, Summer Universiade and Summer Olympic Games.

César earned his college degree in Physical Education from Universidade Católica de Brasília in 2005 and received his MBA degree in Marketing and Sports Business from Fundação Getulio Vargas in Rio de Janeiro, Brazil, in 2013.