Ermesinda of Bigorre, born Gerberga or Gisberga, was a Queen of Aragon, a daughter of Bernard-Roger, Count of Bigorre and his wife Garsenda of Bigorre. She was a member of the House of Foix, the sister of Bernard II, Count of Bigorre, Roger I, Count of Foix, and perhaps of Stephanie, Queen of Navarre who married García Sánchez III of Navarre.