Satyrus of Milan (Italian: San Satiro) was an Italian Catholic administrator born in Augusta Treverorum (modern Trier), who was the brother of Ambrose of Milan and Marcellina.

He was born around 331 at Trier, Germany, moved to Rome with his family and was subsequently trained as a lawyer.

Appointed prefect to one of the Roman provinces, he resigned his post when Ambrose became Archbishop of Milan in order to assume administration of the secular affairs of the archdiocese.

The church of Santa Maria presso San Satiro in Milan refers to him.

[1] Media related to Saint Satyrus at Wikimedia Commons