Pierre Petit de Julleville
- Category : 1876-births
- Type : MGP
- Profile : 1/3 - Investigating / Martyr
- Definition : Single
- Incarnation Cross : RAX The Sleeping Phoenix 4
French Catholic priest, who became archbishop of Rouen. On 18 February 1946 Pope Pius XII elevated him into the College of Cardinals.
Pierre Petit de Julleville was elected bishop of Dijon on 23 June 1927. He was consecrated on 29 September 1927, in the metropolitan cathedral of Paris, by Cardinal Louis-Ernest Dubois, archbishop of Paris. He was promoted to the metropolitan see of Rouen on 7 August 1936, where he acted as Apostolic administrator of the see of Dijon from 18 September 1936 to 15 May 1937. Pope Pius XII created him cardinal priest on 18 February 1946. Pierre Petit de Julleville received the title of S. Maria in Aquiro on 22 February 1946. He died less than 2 years later, on 10 December 1947 in Rouen.