Guillaume de Nangis is a historian Bénédictin of Saint-Denis, died in 1300.

Keep charters of Denis Saint of 1289 with 1299, it is the author of a Chronique kings of France and Vies of Saint Louis and his/her brothers, Philippe the Bold one and Robert , inserted in the collection of André Duchesne, and published in share by Géraud in 1843.

He also wrote a Chronique latine" said chronic Latin of Guillaume de Nangis, 1113 to 1300 with the continuations of this chronicle of 1300 to 1368 . Edition. H. Géraud, vol. 1, Paris, 1843.

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