Alphonsus

Alphonsus may refer to:

As a given name

• Any of a number of rulers named Alfonso
• Alphonsus J. Donlon (1867–1923), American Jesuit
• Alphonsus Liguori (1696–1787), Roman Catholic Saint
• Alphonsus Liguori Penney (born 1924), Canadian Roman Catholic priest
• Alphonsus Rodriguez (1532–1617), Spanish Jesuit
• Alphonsus a Sancta Maria (1396–1456), Spanish historian
• Alphonsus de Guimaraens (1870—1921), Brazilian poet
• Alphonsus Cassell (1949–2010), Montserratian calypso and soca musician

as a surname:

• Petrus Alphonsi (or Petrus Alfonsus) (1062–1110), Spanish Jewish writer

other:

• Alphonsus (crater) lunar crater