Armelino Donizetti Quagliato, best known as Zetti (born 10 January 1965 in Porto Feliz), is a Brazilian football pundit and retired manager and footballer, who played as a goalkeeper.
Zetti played with São Paulo from 1990 to 1996. Arguably one of the most successful goalkeepers in the club's history he won 1 Brazilian championship, 2 Copas Libertadores and 2 Intercontinental Cups during this period. Other clubs played for include Guarani, Toledo, Londrina, Palmeiras, Santos, Fluminense and Sport.
For the Brazilian national squad he was selected for the 1994 FIFA World Cup. He made 17 appearances for his country during the early 1990s.
Zetti was the manager of Esporte Clube Juventude in the Brazilian league second division. On May 7, 2009, he was hired as the manager of Paraná Clube, replacing previous coach Velloso.