Cardinal Bernard Maciejowski, Ciołek coat of arms (1548 – 19 January 1608 in Kraków), Polish nobleman, starosta, royal standard bearer, statesman and Catholic Church leader; Lutsk bishop, Archbishop of Kraków, Archbishop of Gniezno and Primate of Poland (between 1606 and 1608).

Under the influence of the Polish influential Jesuit Piotr Skarga Maciejowski decided to study theology in Rome, which he started in 1582.

In 1600 he was again promoted as he became a bishop of Kraków, his ingressus (official entry) into the Wawel Cathedral took place on 12 August 1600.

The inscription on the bottom of the first page on the manuscript says: Potentissimo Persarum Regi, Bernardus Macieuskius sacrae Romanae Ecclesiae Presbiter Cardinalis Episcopus Cracouiensis Dux Sebierinesis Regni Poloniae Senator veram felicitatem exoptans offert Cracoviae Regni Poloniae Metropoli Die spetima Septembris Anno Salutis Humanae Millesimo sexcentesimo quarto.

There is a surviving portrait of Maciejowski, located at the St. Francis of Assisi's Church, Kraków, the monastery that he ordered rebuilt.

His contemporary chronicler Rajnold Hejdensztejn (Reinhold Heidenstein) in his work Rerum Polonicarum praised Maciejowski's literacy and learning.