Roger de Santis Guedes (born 3 November 1953) is a Brazilian former professional tennis player.

[1] Guedes, born and raised in Bauru, was a junior Banana Bowl champion and attended Hampton Institute on a full scholarship.

[2] In 1976, he played in the NCAA Division II championship-winning team and also partneredBruce Foxworth to win the doubles championship.

On the professional tour, Guedes had a career high ranking of 89 in the world and, despite being one of the Brazil's top players, never received a Davis Cup call up.

His best performance on the Grand Prix circuit was a quarter-final appearance at Bogota in 1979, with wins over João Soares and Álvaro Betancur.