Antoni Kazimierz Ostrowski

His Excellency

Antoni Kazimierz Ostrowski
Archdiocese of Gniezno
ChurchRoman Catholic
ArchdioceseGniezno
Personal details
Born31 March 1713
Died28 August 1784
NationalityPolish
Coat of arms

Antoni Kazimierz Ostrowski (1713–1784) was a Polish priest and politician. He was bishop of Inflanty (1753–1763), bishop of Kujawy (1763–1776) and archbishop of Gniezno (also, Primate of Poland) (1777–1784). He was one of the Polish nobles in Russian service and supported their position, including presiding over the Partition Sejm in 1773–1775.

He was son of Ludwik Ostrowski and Katarzyna.