Patron: Pope St. Eugene I (died 657) was a Roman priest who had held various positions in the Church and was known for his charity and his sanctity. He was consecrated Pope in 654.

History: Founded in 1948 on the far northwest side of Chicago, the parish was named for Eugenio Pacelli, who was then reigning as Pope Pius XII. The founding pastor was Fr. John M. Ryan. The parish has served a variety of European ethnic groups and is now seeing growing numbers of Asian and Latino parishioners. The Sisters of Charity, BVM, staffed the school for many years but now the convent is occupied by the Sisters of the Verbum Dei Missionary Fraternity.