Château La Tour de Mons, archaically named Tour de Marsac, is a winery and wine from the appellation Margaux, located in the Left Bank of the Bordeaux wine region of France, in the commune of Soussans. The wine was rated Cru Supérieur in the Cru Bourgeois classification of 1932, and through later revisions until the temporary annulment of the classification in 2007.
The winery also produces a second wine named Marquis de Mons Margaux.