Palazzo Cavalli, Renaissance palace on Grand Canal near Rialto Bridge, Venice, Italy

Palazzo Cavalli is a three-storey palace on the Grand Canal in the San Marco district, between Palazzo Corner Valmarana and Ca' Farsetti. Its ground floor has two portals on a small fondamenta facing the canal, while the two projecting noble floors each carry a balustraded quadrifora flanked by three single-light windows with parapets. A small attic with a terrace sits above the notched cornice.

Palazzo Cavalli was built in the 16th century and remodelled over the following centuries. In the 16th century it was home to the mercenary captain Bartolomeo d'Alviano, who defended Venice against Emperor Maximilian; in 1521 it passed to the Contarini family. Around 1830 the Mocenigo family owned it, and the writer James Fenimore Cooper stayed there in the 19th century. The Ravà family held it from the early 1900s until 1957, when Dr. Ennio Forti acquired and fully restored it; he lived there for thirty years before selling it to the Municipality of Venice in 1989.

The palace is the seat of the Tide Forecast and Reporting Centre, set up by the Municipality of Venice in 1980 after the 1979 flood, which warns citizens of exceptional acqua alta. It also hosts municipal wedding ceremonies. The centre grew out of the first tide observation service started in the early 1970s, whose siren sounded from the St Mark's Campanile.

The palace faces the Grand Canal between Palazzo Corner Valmarana and Ca' Farsetti, near the Rialto Bridge and opposite Palazzo Barzizza. Boats pass close to its stone base, where blue and white striped mooring poles stand, so the facade is seen well from the water. The Tide Forecast and Reporting Center occupies the building, and weddings are held there.

On the side facing the calle, the palace keeps an old wooden liagò, a roofed terrace loggia of a kind few Venetian noble houses still have. It is a modest timber structure, easy to miss from the canal, and it predates later changes to the building.