Catherine Vasa of Sweden (Swedish: Katarina Gustavsdotter Vasa; 6 June 1539 – 21 December 1610) was a Swedish princess, and the Countess consort of East Frisia as the spouse of Edzard II, Count of East Frisia. She was the oldest daughter of Gustav Vasa and Margareta Leijonhufvud. She was the autonomous Regent of Berum [nl] and Norden in Ostfriesland (East Frisia) from 1599 to 1610.