Palazzo Miani Coletti Giusti (also known simply as Palazzo Giusti or as Palazzo Duodo) is a palace in Venice, located in the Cannaregio district, overlooking the left side of the Grand Canal between the Ca' d'Oro and Palazzo Fontana Rezzonico.
The palace, as engraved on the façade, was built in 1766: it passed through the ownership several times, having been owned by both the Miani, Coletti and Giusti families. Together with the Ca' d'Oro, it houses the Galleria Franchetti.
Characterized by a linear greenish facade, the work of Antonio Visentini, the building is spread over four floors and is characterized by some peculiarities, such as the presence of four water portals surrounded by Doric semi-columns and separated by three niches containing statues depicting men of the time , of numerous single-lancet windows that replace the multi-lancet windows typical of noble floors (even if the rapid rhythm of the composition thins the distance between the central single-lancet windows so much that it makes them appear as a single multi-lancet window), of a particularly marked eaves line distinguished by a dumb arch, an imposing dormer window and two terraces with a balustrade with small columns. Overall, various allusions to the style promoted by Andrea Palladio are noted. The second noble floor is characterized by the presence of two circular niches enclosed in triangular pediments.