Agnes of Baden (1250 – 2 January 1295), was a German noblewoman by birth member of the House of Baden and by her two marriages Duchess of Carinthia and Countess of Heunburg. She was the second child of Herman VI, Margrave of Baden and his wife Gertrude, Duchess of Mödling, titular Duchess of Austria and Styria as the last member of the House of Babenberg. For her maternal ancestry, some historians consider Agnes as the last descendant of the Babenbergs.