D. Infanta Adelgundes, Duchess of Guimarães (10 November 1858 – 15 April 1946) was the fifth child and fourth daughter of Miguel of Portugal and his wife Adelaide of Löwenstein-Wertheim-Rosenberg. A member of the House of Braganza by birth, Adelgundes became a member of the House of Bourbon-Parma through her marriage to Prince Henry of Bourbon-Parma, Count of Bardi. She was also the Regent of the Monarchic Representation of Portugal and for that reason was granted the title of Duchess of Guimarães, usually reserved for the Head of the House.