Antoninus of Piacenza

This article is about the saint who died in 303. He is not to be confused with the 6th-century Piacenza Pilgrim to the Holy Land.

Saint Antoninus of Piacenza
Martyr
Died	AD 303 Piacenza or Travo
Venerated in	Roman Catholic Church
Canonized	Pre-Congregation
Feast	September 30
Patronage	Piacenza

For the 6th-century author of a pilgrim's itinerary of the Holy Land, sometimes called Antoninus, see Anonymous pilgrim of Piacenza.

Saint Antoninus of Piacenza (or Placentia) (died AD 303), also known as Antoninus Placentinus, is a patron saint of Piacenza in Italy. He is venerated as a saint and martyr in the Roman Catholic Church, with a feast day of 30 September.

The saint was said to have been martyred at Piacenza or Travo, in the AD 303 Diocletianic Persecution. He appears in Victricius' De Laude Sanctorum of the same century, and the somewhat later Martyrologium Hieronymianum. Sabinus of Piacenza established his sanctuary, following a rediscovery of the relics. A later tradition made him a member of the legendary Theban Legion. Piacenza's Basilica di Sant'Antonino bears his name.