John V Thurzó (Hungarian: Thurzó V. János; Polish: Jan V Turzo) was a 15th-century Bishop of Wrocław, Poland. A great patron and lover of the arts and Sciences, Luther called him "the greatest bishop of the century".
John was the son of János Thurzó a protestant Hungarian nobleman of the Thurzó family and Mayor of Kraków, and his first wife, Ursula Bem. John gained a Bachelor of Arts in 1484 and a master's degree in 1487, and then studied Canon law in Italy.
He was Dean of Wroclaw Cathedral from March 1502 and Bishop of Wrocław from 1506 to 1520, while his brother Stanisław was Bishop of Olomouc. As Bishop John was patron of artists, including Albrecht Dürer and Lucas Cranach, and poets. He corresponded with Martin Luther on matters of theology and was involved in the founding of University of Wittenberg.