Infanta Antónia of Portugal (or of Braganza; ; Antónia María Fernanda Micaela Gabriela Rafaela Francisca de Assis Ana Gonzaga Silvéria Júlia Augusta de Saxe-Coburgo e Bragança; Lisbon, 17 February 1845 – Sigmaringen, 27 December 1913), was a Portugueseinfanta (princess) of the House of Braganza, daughter of QueenMaria II of Portugal and her King consortFerdinand II of Portugal. Through her father, she also held the titles of Princess of Saxe-Coburg and Gotha and Duchess of Saxony.