Alfonso IV may refer to:
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Alfonso IV of León
Alfonso IV (s933), called the Monk ( es, el Monje), was King of León from 925 (or 926) and King of Galicia from 929, until he abdicated in 931.
When Ordoño II died in 924 it was not one of his sons who ascended to the throne of León but ra ...
(924–931)
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Afonso IV of Portugal
Afonso IVEnglish: ''Alphonzo'' or ''Alphonse'', or ''Affonso'' (Archaic Portuguese), ''Alfonso'' or ''Alphonso'' (Portuguese-Galician) or ''Alphonsus'' (Latin). (; 8 February 129128 May 1357), called the Brave ( pt, o Bravo, links=no), was King ...
(1291–1357)
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Alfonso IV of Aragon (1327–1336)
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Alfonso IV of Ribagorza (1332–1412)
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Alfonso IV d'Este
Alfonso IV d'Este (2 February 1634 – 16 July 1662) was Duke of Modena and Reggio from 1658 until his death. He was the father of Mary of Modena, consort of James II of England.
Alfonso was born in Modena, the eldest son of Francesco I d' ...
(1634–1662), Duke of Modena and Regg
{{Hndis, Alfonso 04