Baron, later Count Sándor Károlyi de Nagykároly (German: Alexander Károly von Nagy-Károly; 20 March 1668 – 8 September 1743) was a Hungarian aristocrat, statesman and Imperial Feldmarschall.
He was one of the generals of Francis II Rákóczi during the War of Independence.
Later he negotiated the Treaty of Szatmár, which guaranteed autonomy to the Hungarian nobles.