Guilhem de Saint-Leidier, also spelled Guilhem de Saint Deslier, Guillem de Saint Deidier and Guilhèm de Sant Leidier was a troubadour of the 12th century, composing in Occitan.
A renowned troubadour from the 12th century, Guilhem de Saint-Leidier, was celebrated for his musical compositions in the Occitan language.