Kościół pw. św. Michała Archanioła

St. Michael the Archangel Church in Ostrzeszów is a Roman Catholic convent church within the Ostrzeszów parish of Christ the King. It is located in Ostrzeszów, in Greater Poland Province. It belongs to the Ostrzeszów deanery of Kalisz diocese. Formerly it belonged to Bernardines, now to the Nazareth nuns.

The temple was built between 1680-1740. It is a Baroque, one-nave building with an elongated presbytery. In the interior there are barrel vaults based on cornices with lunettes. The interior is furnished in the Baroque style from the eighteenth century. The polychromy was made by A. I. Linke in 1740. Among the polychromies there are 23 coats of arms of the Ostrzeszów nobility - the founders of the temple. On the southern wall a tombstone of Jerzy Florian Karsznicki, a Minster of Wieluń with rich stucco decoration and a portrait of the deceased. On the opposite side there is an epitaph of Tomasz Karsznicki, his wife Marianna nee Uleska and their six sons.