Mikołaj Stefan Pac (Lithuanian: Mikalojus Steponas Pacas; c. 1626 – 1684) was a Polish–Lithuanian nobleman, Voivode of Trakai Voivodeship since 1651, Castellan of the Grand Duchy of Lithuania capital city Vilnius since 1670 and the Bishop of Vilnius since 1671. At the time Pac family claimed that their family is of Italian origin Pazzi family.



