Sir Guy de Beauchamp (born c. 1335 - died 28 April 1360), Knight, was an English nobleman and heir apparent to the title of Earl of Warwick, being the eldest son of the 11th Earl of Warwick.

He served as a military commander in the army of Edward III in France, where he was mortally injured in a freak hailstorm during the Siege of Chartres on 13 April.

[1] He was knighted with his brother, Thomas, in July 1355, when the King was with the fleet in the Downs on the way to an invasion of France.

For his good service, he was granted an annual pension of L100 on 27 November 1355.

[2] His widow Philippa died 5 August 1384, and was buried at Necton, Norfolk.