Château La Tour Carnet is a Left Bank Haut-Médoc estate and one of the 10 châteaux designated as Fourth Growths in the 1855 Bordeaux classification. The estate and some of the structures of the château date back to the 12th Century. La Tour Carnet makes both red and white Bordeaux blends but only the red wines carry Haut-Médoc on the label – the white carries the broader Bordeaux Blanc AOC.

In 1999, Carnet was bought by businessman Bernard Magrez who owns a number of wine labels in and out of Bordeaux, including Pessac-Léognan winery Château Pape Clément. Magrez increased the property size of Carnet as well as the percentage of Merlot in the vineyards.