Prince Antônio Gastão of Orléans-Braganza, Brazilian prince (d. 1918)

Captain Prince Antônio Gastão of Orléans-Braganza MC (Portuguese: Antônio Gastão de Orléans e Bragança; 9 August 1881 – 29 November 1918) was a Brazilian prince who served in the forces of the British Empire during World War I.