Château Sigalas-Rabaud, previously also named Château Rabaud-Sigalas, is a Bordeaux wine producer in the Sauternes appellation. Its sweet white wine ranked as Premier Cru Classé (French, “First Growth”) in the original Bordeaux Wine Official Classification of 1855. It is located in the commune of Bommes in the region of Graves. It was once joined with Château Rabaud-Promis in the estate named Château Rabaud. With only 14 hectares (35 acres), Château Sigalas-Rabaud is the smallest of all crus classés of the 1855 classification.