Guillaume Alexis (precise birth and death dates unknown) was a French Benedictine monk and poet of the late 15th and early 16th centuries, nicknamed the "Good Monk". His abbey was that at Lire (La Vieille-Lyre), in the diocese of Évreux, He became prior of , in Perche. In 1486 he went on a pilgrimage to Jerusalem and died there, a victim of Ottoman persecution.