The Stammerer is an epithet applied to:
Bohemond III of Antioch (1144–1201), Prince of Antioch Louis the Stammerer (846–879), King of Aquitaine and later King of West Francia Michael II (770–829), Emperor of the Byzantine Empire Notker the Stammerer (c. 840–912), musician, author, poet and Benedictine monk in what is now Switzerland
See also Lambert le Bègue (English: "the Stammerer" or "the Stutterer"), 12th century priest and reformer in Liege List of stutterers