John Hastings, 1st Baron Hastings (6 May 1262 – 28 February 1313) was an English peer and soldier of the Middle Ages. Hastings was a competitor for the Scottish throne in 1290/92 in the Great Cause.
Hastings was the son of Henry de Hastings, who was summoned to Parliament by Simon de Montfort, 6th Earl of Leicester as Lord Hastings in 1263. However, this creation was not recognized by the King Henry III of England although John Hastings is sometimes referred to as the second Baron Hastings. His mother was Joanna de Cantilupe, sister and heiress of his uncle George de Cantilupe (d.1273).
He became the 13th Baron Bergavenny by tenure on the death of his uncle George de Cantilupe in 1273, and thereby acquired Abergavenny Castle and the honour of Abergavenny.
Hastings fought from the 1290s in the Scottish, Irish and French wars of King Edward I and was later Seneschal of Aquitaine.
In 1290 he had unsuccessfully contested the Scottish crown as grandson of Ada, third daughter of David of Scotland, Earl of Huntingdon, who was a grandson of King David I. The same year he was summoned to the English Parliament as Lord Hastings.
In 1301, he signed a letter to Pope Boniface VIII, protesting against papal interference in Scottish affairs.