The noble family von Sax or Saxe (originally in Italian de Sacco) was a medieval noble family in eastern Switzerland. They owned estates and castles on both sides of the Alps in the modern cantons of St. Gallen, Graubünden and Ticino. The origin of the family is unknown, but they probably stem from Churrätien nobility and were related to the da Torre family. The family divided into two main lines; the Grafen (counts) von Sax-Misox and the Freiherren (barons) von Hohensax.