Thomas Percy, 1st Baron Egremont (29 November 1422 – 10 July 1460) was the son of Henry Percy, 2nd Earl of Northumberland, and Eleanor Neville, being made Lord Egremont in 1449.
A northern baron, he became a leading figure in the internecine Percy-Neville feud, fighting at the Battle of Heworth Moor.
When the Wars of the Roses began mid-decade, Egremont fought for the king on the Lancastrian side, being killed five years later at the Battle of Northampton.