Pope John XXI (Latin: Ioannes XXI; c. 1215 – May 20, 1277), born Pedro Julião or Peter Juliani (Latin: Petrus Iulianus), is Pope from September 13, 1276 to his death in 1277.
A Portuguese often identified with Pedro Hispano (Latin: Petrus Hispanus; English: Peter of Spain), he is the only Portuguese pope, although Damasus I can also be considered Portuguese, as he was born in territory that is nowadays in Portugal.
He is also the only pope to have been a physician.
Because he decides to skip the number XX, the previous pope named John was Pope John XIX (1024–32).
Pope John XXI is technically the 20th actual Pope John.