Palazzo Secco Dolfin, Palace in Dorsoduro, Venice, Italy.

Ca' Dolfin, also called Palazzo Secco Dolfin, stands in Dorsoduro near San Pantalon. Its exterior is largely as Domenico Rossi left it after his renovation, with the main facade on the Rio di San Pantaleone. Inside, the former salone is now the Aula Magna Silvio Trentin of Ca' Foscari University.

A building stood on this site by the 9th century; in the 13th century it belonged to the Barbo family. The Secco, a wealthy family from Bergamo, later acquired the 14th-century Barbo house and rented it to Marcella Marcello for 95 ducats a year. In 1621 their heirs sold it for 12,000 scudi to Cardinal Giovanni Dolfin; after his death the following year, his nephew Nicolò began the renovation, with work attributed to architects in Longhena's circle and later to Domenico Rossi.

The name joins two families: the Secco, Bergamasque merchants who owned the fourteenth-century building, and the Dolfin, who bought it in 1621. The Dolfin turned the main hall into a family monument, with ceiling frescoes by Nicolò Bambini and Antonio Felice Ferrari around 1714 and ten canvases of Roman history by Giambattista Tiepolo between 1725 and 1729.

Ca' Dolfin stands in Dorsoduro near San Pantalon, beside the Rio di San Pantaleone. It now houses Ca' Foscari University's Aula Magna Silvio Trentin, named in 1975, and offices; the upper floors were a university college until 1972. Access is tied to academic use, so the exterior is what visitors normally see.

The walls once held paintings depicting Roman history scenes by Giambattista Tiepolo, now preserved in major museums including the Hermitage and the Metropolitan Museum. This migration of artworks shows how important pieces moved from Venetian palaces into global museum collections.