Justin of Chieti was an early Catholic bishop serving the community of Chieti, Italy. While his exact date of death remains uncertain, historical accounts suggest he may have lived during the 3rd, 4th, or 6th centuries. Although his existence is not documented in records prior to the 15th century, he is traditionally honored as a saint. His later biographical accounts, known as a passio, were influenced by the life of a different bishop of the same name and include his relatives, Florentius, Felix, and Justa.
Life and tradition

Historical documentation for Justin is limited, as no evidence of his life exists before the 15th century. His hagiography was written much later, drawing parallels to the life of a bishop from Siponto. This narrative also connects him to his brothers, Florentius and Felix, as well as his niece, Justa, who were martyred at Furci in the Abruzzo region.
Veneration and relics

The cathedral in Chieti was dedicated to him during the 9th century. Many of his relics, including an arm, are preserved in an urn located within the cathedral's crypt. He is listed in the Roman Martyrology for January 1. In Chieti, his feast day was traditionally observed on January 14, though this was later changed to May 11.
