John de Mowbray, 3rd Baron Mowbray

John de Mowbray, 3rd Baron Mowbray (1310–1361), was the son of the 2nd Baron, who was hanged after the Battle of Boroughbridge in 1322 for opposing Edward II; he and his mother were held in the Tower until 1327. Restored, he married Joan, daughter of Henry, 3rd Earl of Lancaster.

He served at the sieges of Nantes and Aiguillon and fought at Neville's Cross in 1346. He died of plague at York in 1361.