The Búzios ATP tournament (officially Búzios Open ) is a former men's tennis tournament that was held in 1991 and 1992 in the Brazilian seaside resort of Armação dos Búzios . The competition was held on outdoor hard courts and was played in the first week of November. The tournament is part of the ATP World Series , the predecessor of the ATP World Tour 250 .
Neither in singles nor in doubles was a player able to win both stages of the tournament. However, Jaime Oncins reached the final both times in the individual competition and also won the last event; he is also the only domestic winner.