Stefan Wyszynski was a Polish prelate of the Roman Catholic Church. He served as the bishop of Lublin from 1946 to 1948, archbishop of Warsaw and archbishop of Gniezno from 1948 to 1981. Appointed cardinal on 12 January 1953 by Pope Pius XII, he assumed the title of Primate of Poland. Stefan Wyszyński was often called the Primate of the Millennium.

The cause for his beatification and canonization has many proponents in the Vatican and in his native Poland, where he is well known for his heroic and principled stand against Nazism and Communism and because of his connections to Pope John Paul II (he had told him of his first episcopal appointment and, much later in 1978, ultimately urged him to accept his nomination as Supreme Pontiff), though their relationship was not as close as some others in the Polish hierarchy.