Several valuable sculptures are exhibited in the Museum.

Among them are busts by Michele Fabris, called Ongaro, the clay model of Letizia Bonaparte by Antonio Canova and the Head of a Child by Medardo Rosso. 

The seven marble busts by Ongaro mark a bridge between the Baroque and Rococo periods. Originally  known as the Bravi, refferring to Francesco Querini’s notorious guards, they were attributed to Orazio Marinali. Critics have recently reattributed them to Michele Fabris, called Ongaro, a major protagonist of Venetian sculpture of the second part of the seventeenth century. The busts have also been re-identified as representing some philosophers, a young student, and a couple of saints, St. John the Evangelist and St. John the Baptist.

Also remarkable is Canova's clay preparatory version of Letizia Bonaparte, created in 1805 and donated to Giovanni Querini by Canova's half-brother, as evidenced in a letter dated February 24, 1857. The Canovian clay preparatory models are among the first works of their type, and the Querinian version is impressive for being one of the best preserved.

There are also several notable sculptures acquired after the birth of the Foundation such as the wax Head of a Child by Medardo Rosso, obtained in 1947, and the chalk The Bather by Alberto Viani.