Sture was the name of two influential families in Sweden from the late 15th century to the early 16th century. One member of one of these families and two members of the other served as Regents of Sweden in the Kalmar Union between 1470 and 1520. The Sture Party were supported by the peasants and burgesses which often resulted in conflict with the church and the nobility in the Privy Council who more often supported the Union.