Marcello Agnoletto (; born 2 January 1932) is a retired professional Italian footballer who played as a midfielder.
Agnoletto played for 6 seasons (118 games, 6 goals) in the Italian Serie A for Calcio Padova, U.C. Sampdoria and L.R. Vicenza.
Agnoletto played his only game for the Italy national football team on 11 November 1956, appearing in a match against Switzerland.