Guillaume Pellicier (c. 1490 – 1568) (Guillaume Pellissier) was a French prelate and diplomat.
Francis I entrusted him with several important missions; in 1529 he accompanied Louise de Savoie to Cambrai and concluded peace with Charles V. In 1533 at Marseilles he arranged with Clement VII for the marriage of the Duc d'Orléans (Henri II) and Catherine de' Medici. He obtained permission for the translation of his Episcopal see from Maguelonne to Montpellier from Paul III in 1536.
Appointed ambassador at Venice in 1539, he fulfilled his mission to the entire satisfaction of Francis I, and brought back a large number of Greek, Syriac, and Hebrew Manuscripts. On the discovery of the system of espionage he had employed, the king had to recall him in 1542. Returning to his diocese, he was imprisoned in the castle of Beaucaire for his tolerance of the Reformers, so he replaced his former indulgence by severity, and the end of his episcopate was disturbed by religious struggles. He was a man of wide learning, a humanist and a friend of humanists, and took a keen interest in the natural sciences.
- This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Pellicier, Guillaume". Encyclopædia Britannica. 21 (11th ed.). Cambridge University Press.
- This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). "Guillaume Pellissier". Catholic Encyclopedia. New York: Robert Appleton.
- See J. Zeller, La Diplomatie française après le correspondance de G. Pellicier (Paris, 188f) ; and A. Tausserat-Radel, Correspondence politique de Guillaume Pellicier (Paris, 1899).