William of Chartres or Guillaume de Chartres may refer to:
- Guillaume de Ferrières (d. ?1204), vidame of Chartres and troubadour
- William of Chartres (Templar) (d. 1219), grand master of the Knights Templar
- William of Chartres (Dominican) (d. c. 1280), chaplain and biographer of Louis IX of France
This disambiguation page lists articles about people with the same name.
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