Armelino Donizetti Quagliato, best known as Zetti (born 10 January 1965), is a Brazilian football pundit, manager and former goalkeeper.

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.

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.