Giovanni Ser di Mocenigo, Jr. (1409 – September 14, 1485), Pietro Mocenigo's brother, was doge of Venice from 1478 to 1485. He fought at sea against the Ottoman Sultan Mehmed II and on land against Ercole I d'Este, duke of Ferrara, from whom he recaptured Rovigo and the Polesine. He was interred in the Basilica di Santi Giovanni e Paolo, a traditional burial place of the doges. His dogaressa was Taddea Michiel (d.1479), who was to be the last dogaressa to be crowned in Venice until Zilia Dandolo in 1557, almost a century later.