Eugeniusz Baziak (Polish pronunciation: [ɛwˈɡɛɲuʐ ˈbaʑak]; 8 March 1890 in Tarnopol – 15 June 1962 in Warsaw, Poland) was Archbishop of Lviv and apostolic administrator of Kraków.

In 1951, after the death of Cardinal Adam Stefan Sapieha, he became the apostolic administrator of the archdiocese in Kraków.

In his capacity as apostolic administrator of Kraków, he recommended to Pope Pius XII the promotion of Karol Wojtyła (the future Pope John Paul II), who was then a priest in the Archdiocese of Kraków, to the office of auxiliary bishop of that archdiocese.

Instead, Wyszyński received notice from the Vatican that he was simply to inform Wojtyła of the appointment, and ask him for his acceptance.

After Wojtyła accepted and the appointment was formalized by the Pope, it fell to Baziak to be the principal consecrator, Bishops Kominek and Jop being co-consecrators, of Wojtyła as a bishop, the episcopal consecration occurring in September 1958.