| Type: | Bishop |
| Honorific-Prefix: | Most Reverend |
| Franciszek Zajerski | |
| Auxiliary Bishop of Lutsk Titular Bishop of Argos | |
| Church: | Catholic Church |
| Diocese: | Diocese of Lutsk |
| Term: | 1622–1631 |
| Death Date: | 1631 |
| Death Place: | Lutsk, Ukraine |
Franciszek Zajerski (died 1631) was a Roman Catholic prelate who served as Auxiliary Bishop of Lutsk (1622–1631) and Titular Bishop of Argos (1622–1631).[1]
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 Paweł Wołucki, Bishop of Włocławek, 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.