Guy de Beauchamp, 10th Earl of Warwick, English nobleman
Guy de Beauchamp, 10th Earl of Warwick (c. 1272 – 12 August 1315) was an English magnate, and one of the principal opponents of King Edward II and his favourite, Piers Gaveston. Guy was the son of William de Beauchamp, the first Beauchamp earl of Warwick, and succeeded his father in 1298. He distinguished himself at the Battle of Falkirk and subsequently, as a capable servant of the crown under King Edward I. After the succession of Edward II in 1307, however, he soon fell out with the new king and the king's favourite, Piers Gaveston. Warwick was one of the main architects behind the Ordinances of 1311, that limited the powers of the king and banished Gaveston into exile.

When Gaveston returned to England in 1312—contrary to the rulings of the Ordinances—he was taken into custody by Aymer de Valence, 2nd Earl of Pembroke. Warwick abducted Gaveston and, together with Thomas, 2nd Earl of Lancaster, had him executed. The act garnered sympathy and support for the king, but Warwick and Lancaster nevertheless managed to negotiate a royal pardon for their actions. After the disastrous defeat at the Battle of Bannockburn in 1314, King Edward's authority was once more weakened, and the rebellious barons took over control of government. For Warwick the triumph was brief; he died the next year.

Guy de Beauchamp is today remembered primarily for his part in the killing of Gaveston, but by his contemporaries he was considered a man of exceptionally good judgement and learning. He owned what was for his time a large collection of books, and his advice was often sought by many of the other earls. Next to Lancaster, he was the wealthiest peer in the nation, and after his death his lands and title were inherited by his son, Thomas de Beauchamp, 11th Earl of Warwick.