Ronaldo Carvalho (born 28 February 1979) is a Brazilian former professional tennis player. Carvalho, a native of Goiás, reached a best singles world ranking of 362 and won two ITF Futures titles. In 2004, he represented Brazil in a Davis Cup tie against Peru in Brasília, losing his singles rubber to Ivan Miranda in five sets. He made the occasional appearance on the ATP Challenger Tour and was a doubles finalist at the Quito Challenger.