Stefan Pac (; 1587âÂÂ17 November 1640) was a PolishâÂÂLithuanian nobleman, politician and magnate.
He was the private secretary of King Sigismund III of Poland since 1611, Grand Clerk of Lithuania since 1615, Recorder of Lithuania since 1626, Court Treasurer of Lithuania since 1630, Grand Treasurer of Lithuania since 1630 and eventually the Deputy Chancellor of Lithuania since 1635.
Marshal of the Sejm (extraordinary) on 13âÂÂ18 November 1629 in Warsaw.