Giovanni di Niccolò Mansueti was an Italian painter.

Little is known of his biography. He was active in Venice from 1485 to 1526. A pupil of Gentile Bellini, he worked in the antique style in the Miracles of the Cross painted around 1496-1502 for the Scuola Grande di San Giovanni Evangelista and now in the Gallerie dell'Accademia. In style he resembles Cima da Conegliano and Vittore Carpaccio. One of his paintings resides in a church near Bagni di Lucca, Italy.