Franciszek Zajerski (died 1631) was a Roman Catholic prelate who served as Auxiliary Bishop of Lutsk (1622âÂÂ1631) and Titular Bishop of Argos (1622âÂÂ1631).
On 21 Feb 1622, Franciszek Zajerski was appointed during the papacy of Pope Gregory XV as Auxiliary Bishop of Lutsk and Titular Bishop of Argos. On 9 Oct 1622, he was consecrated bishop by Paweà  Woà Âucki, Bishop of Wà Âocà Âawek, with Baltazar Miaskowski, Titular Bishop of Margarita, and Stanislaw Starczewski, Titular Bishop of Lacedaemonia, serving as co-consecrators. He served as Auxiliary Bishop of Lutsk until his death in 1631.