'''Alfonso IV''' can refer to:
*[[Alfonso IV of Leon]] -- (924-931)
*[[Afonso IV of Portugal]] -- (1291-1357)
*[[Alfonso IV of Aragon]] -- (1327-1336)

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[[ca:Alfons IV]]
[[es:Alfonso IV]]
[[gl:Afonso IV]]
[[ja:アルフォンソ4世]]
[[pt:Afonso IV]]
[[zh:阿方索四世]]