Hilarius

Hilarius is the given name of:


 * Hilarius of Aquileia (died c. 284), saint, bishop of Aquileia, Italy
 * Hilarius or Hilary of Poitiers (c. 310 – c. 367), Bishop of Poitiers and Doctor of the Church
 * Hilary the Deacon (Latin: Hilarius Diaconus) (fl. 355), Sardinian deacon of the Roman church
 * Hilarius, Archbishop of Tarragona (Spain) c. 402
 * Hilarius or Hilary of Arles (c. 403–449), Bishop of Arles and saint
 * Hilarius (praefectus urbi), praefectus urbi (prefect of Rome) in 408
 * Pope Hilarius or Hilary (died 468), Catholic pope and saint
 * Hilarius (poet) (fl. 1125)
 * Hilarius Breitinger (1907–1994), German Franciscan prelate
 * Hilarius Gilges (1909–1933), Afro-German actor and communist
 * Hilarius Moa Nurak (1943–2016), Roman Catholic bishop
 * Hilarius of Sexten (secular name Christian Gatterer) (1839–1900), Austrian Capuchin theologian