Coordinates: 45°00′31″N 0°38′46″W / 45.00870°N 0.64605°W
Château Giscours is a winery in the Margaux appellation of the Bordeaux region of France, in the commune of Labarde. The wine produced here was classified as one of fourteen Troisièmes Crus (Third Growths) in the Bordeaux Wine Official Classification of 1855.
The first written reference to the domain of Giscours, a deed confirming the sale of the estate, dates from 1330 and refers to a fortified keep. Records of Giscours' vineyards go back to 1552 when Seigneur de la Bastide sold it to Pierre de l'Horme. Prior to the French Revolution Giscours belonged to the Saint-Simon family before it was confiscated, and then bought by two Americans in 1793, John Gray and Jonathan Davis of Boston.
Several owners followed, and Giscours' great era began with the purchase of the property by the banker Count de Pescatore in 1845, who in 1847 hired Pierre Skawinski to manage his estate. Skawinski proved to be one of the great agriculturalists of Médoc in the 19th century, in 1860 the inventor of a plough which bears his name, and a pioneer in the fight against mildew, he was instrumental in making Giscours one of the most reputable third growths. Skawinski managed the estate for 50 years, also during the following ownership by the Cruse family, the estate's most successful period. The family sold Giscours in 1913, and many difficult years followed.