Plauto de Barros Guimarães (25 April 1925 – 10 October 1972) was an Olympic freestyle swimmer from Brazil, who participated in a Summer Olympics for his native country.

[2][3] He was a member of Esporte Clube Pinheiros, São Paulo.

[4] At the 1948 Summer Olympics in London, he swam the 100-metre freestyle, not reaching the finals.

[3] He was also ranked to compete in the 4×200-metre freestyle, but at the Brazilian trials, Willy Otto Jordan persuaded the Brazilian principals to make a new classification proof, where Willy took the vacancy of Plauto.

This biographical article related to a Brazilian swimmer is a stub.