Augustinus Triumphus (1243, Ancona–1328, Naples), also known as Augustinus of Ancona or Agostino Trionfo, was a Hermit of St. Augustine and writer. He is celebrated for his work Summa de potestate ecclesiastica, printed in 1473. In the latter part of the sixteenth century, according to William J. Bouwsma it became 'a standard repository of papalist arguments'; and was several times reprinted.
He is often linked with Alvarus Pelagius, who wrote in the same area of papal and Church rights.
- Summa de potestate ecclesiastica. Arnold ter Hoernen, Cologne 26.I.1475 digital
- Michael Wilks (1963), The Problem of Sovereignty in the Later Middle Ages. The Papal Monarchy with Augustinus Triumphus and the Publicists