| Type: | Bishop |
| John of Pontoise | |
| Bishop of Winchester | |
| Religion: | Catholic |
| Appointed: | 9 June 1282 |
| Enthroned: | September 1282 |
| Term End: | 5 December 1304 |
| Predecessor: | Richard de la More |
| Successor: | Henry Woodlock |
| Consecration: | before 15 June 1282 |
| Death Date: | 5 December 1304 |
| Previous Post: | Archdeacon of Exeter |
John of Pontoise (Latin: Johan de Pontissara;[1] died 1304) was a medieval Bishop of Winchester in the Kingdom of England, serving from 1282 to 1304.
John of Pontoise was from Pontoise in Seine-et-Oise in France, but spent much of his life in England. In 1280, he was briefly Chancellor of the University of Oxford.[2] [3] He was an Archdeacon of Exeter and a papal chaplain before Pope Martin IV provided him to the see of Winchester on 9 June 1282; he was consecrated before 15 June 1282. He was enthroned at Winchester Cathedral in September 1282.[4]
In 1303, he helped negotiate the Treaty of Paris that ended the 1294–1303 Gascon War.
John of Pontoise died on 4 December 1304.