Rodrigo Octávio Coelho da Rocha e Castro (born 21 December 1978 in Belo Horizonte, Minas Gerais) is a freestyle swimmer from Brazil, who competed for his native country at three consecutive Summer Olympics, starting in 2000 (Sydney).

[1] He was at the 1999 Pan American Games in Winnipeg, where he earned a silver medal in the 4×200-metre freestyle.

[2] The time of the Brazilian relay team (7:22.92), also including Gustavo Borges, André Cordeiro and Leonardo Costa, was a South American record.

[22] Participating in the 2008 FINA World Swimming Championships (25 m) in Manchester, Castro finished 6th place in the 200-metre freestyle final.

[1] Broke the Gustavo Borges' South American Record in the 200-metre freestyle in olympic pool, which had lasted 10 years, with a time of 1:47.87.