Countess Anne Joanne of Nassau-Siegen (2 March 1594Jul. – December 1636), German: Anna Johanna Gräfin von Nassau-Siegen, official titles: Gräfin zu Nassau, Katzenelnbogen, Vianden und Diez, Frau zu Beilstein, was a countess from the House of Nassau-Siegen, a cadet branch of the Ottonian Line of the House of Nassau, and through marriage Lady of Brederode, Vianen, Ameide and Kloetinge.