Palazzo Donà (also known as Palazzetto Sangiantoffetti Donà) is a palace in Venice, located in the Santa Croce district, overlooking the right side of the Grand Canal, alongside Palazzo Correggio, between Ca' Pesaro and Ca' Corner della Regina.
The palace was built in the 18th century on the site of an older building. Its owners, the Sangiantoffetti, were mainland nobles originally from Vicenza. They bought into the Venetian patriciate by supporting the Candia war with considerable sums.
The small, three-storey palace has an arched portal on the ground floor facing the water in the centre, flanked by two single arched windows. On the mezzanine, above the portal, there are two small oval windows between two pairs of rectangular single windows. The main floor shows a coupled double window with a balcony in the middle. On either side are pairs of simple arched windows. The facade ends at the top with a toothed eaves. Above is a small dormer window with a single rectangular window. The plastered, white-painted façade is decorated with flat bosswork in the lower part of the ground floor.