Elia Dalla Costa was an Italian Roman Catholic prelate and cardinal who served as the Archbishop of Florence from 1931 until his death. Dalla Costa served as the Bishop of Padua from 1923 until 1931 when he was transferred to Florence; he was elevated to the cardinalate on 13 March 1933. Dalla Costa was a staunch anti-fascist and anti-communist and was known best for providing refuge for Jewish people during World War II and providing others with fake documentation to flee from persecution.

The Archdiocese of Florence is a Latin Church metropolitan see of the Catholic Church in Italy. It was traditionally founded in the 1st century, according to the 14th century chronicler Giovanni Villani. The diocese was directly subordinate to the Holy See (Papacy) until 1420.