Anna Catherine Constance Vasa (Polish: Anna Katarzyna Konstancja Waza; 7 August 1619 – 8 October 1651) was a Polish princess, daughter of King Sigismund III Vasa and his second wife, Constance of Austria.

Despite arrangements in 1639 and 1642, the marriage never actually took place, because of the age of Ferdinand Charles and because of disagreement about the amount of dowry.

Frederick William, Elector of Brandenburg, and Gaston, Duke of Orléans (brother of King Louis XIII of France), were also candidates for her hand.

[2] She brought a considerable dowry in jewels and cash, calculated at a total of 2 million thalers.

[1] On 18 July 1645 she gave birth her only child, a son Adam William Philip of Brandenburg, who died the same day.