Máté Csák or Matthew III Csák (between 1260 and 1265 – 18 March 1321; , ), also Máté Csák of Trencsén (, ), was a Hungarian oligarch who ruled "de facto" independently the north-western counties of Medieval Hungary (today roughly the western half of present-day Slovakia and parts of Northern Hungary). He held the offices of master of the horse "(főlovászmester)" (1293–1296), palatine "(nádor)" (1296–1297, 1302–1309) and master of the treasury "(tárnokmester)" (1309–1311). He was able to maintain his rule over his territories even after his defeat at the Battle of Rozgony against King Charles I of Hungary. In the 19th century, he was often described as a symbol of the struggle for independence in both the Hungarian and Slovak literatures.