Palazzo Aldobrandeschi is a palace in Grosseto, Italy. It is situated in Piazza Dante. During the Middle Ages, it was the house of the Aldobrandeschi family. It was almost entirely rebuilt in the early 19th century by the architect Lorenzo Porciatti. It is now a Neo-Gothic building with ogival mullioned windows and merlons in the upper part of the walls. It houses the seat of the Province of Grosseto.