Peter of Coimbra (also known as Peter the Constable) (c. 1429 – Granollers, June 30, 1466) is the son of Infante Peter, Duke of Coimbra, who becomes the fifth Constable of Portugal and third Grand Master of the Order of Saint Benedict of Aviz.
The Consell de Cent later grants Peter the crown of Aragon, which he claims from 1463 to 1466 in opposition to John II.
Sometimes called Peter V, his status as king of Aragon, however, along with that of John II's other challengers, is disputed.
