Gustavo Tsuboi (born 31 May 1985, São Paulo) is a table tennis player from Brazil, he won three medals in double and team events in the Pan American Games. Along with Hugo Hoyama and Thiago Monteiro, Tsuboi was part of the winning team at the 2007 Pan American Games and 2011 Pan American Games. Tsuboi won the gold medal at the inaugural 2011 Latin American Cup held in Rio de Janeiro, Brazil after defeating Paraguay's Marcelo Aguirre 4–0. Tsuboi competed in table tennis at the 2008 and 2012 Summer Olympics.