John I (27 December 1350 – 19 May 1396), called by posterity the Hunter[a] or the Lover of Elegance,[b] or the Abandoned[c] in his lifetime, was the King of Aragon from 1387 until his death.

His wife frequently participated in government, since the king was often ill.[5] Once on the throne, John abandoned his father's relatively Anglophile policy and made an alliance with France.

[6] In 1389–90, the Aragonese battled the troops of the Count of Armagnac, John III, who was attempting to conquer the lands of the vassal Kingdom of Majorca.

Also in 1391, his administration faced a revolt in the vassal kingdom of Sicily, where the population had proclaimed Louis II of Naples as king.

However, in the 1380s, the remaining independent principality Arborea became a fortress of rebellion and the Aragonese were rapidly driven back by Eleanor de Bas-Serra.