Walter of Winterburn (13th century – 26 August 1305) was an English Dominican, cardinal, orator, poet, philosopher, and theologian.
He was provincial of his order in England from 1290 to 1298, and was created cardinal on 21 February 1304 by Pope Benedict XI.
In 1305, after having taken part in the election of Clement V, Walter set out from Perugia with several other cardinals to join the pope in France, but at Genoa he was seized with his last illness, during which he was attended by the dean of the Sacred College, Nicholas de Prato.
Nicholas Trivet, an English Anglo-Norman chronicler who was a close friend, wrote that Walter of Winterburn was a man endowed with many superior qualities, natural and supernatural.
According to Trivet, he was thoroughly versed in knowledge, graced with rare modesty and a kindly disposition—a model of religious piety and of mature erudition who despite numerous duties in the cloister and at the imperial Court never shortened his hours of prayer.