The Church of Saint John of Jerusalem outside the walls (Polish: Kościół św.

Jana Jerozolimskiego za murami) is a Roman Catholic parish church in the city of Poznań in western Poland.

A church, dedicated to St. Michael, stood on the site near the fork of the roads leading to Śrem and Giecz at the end of the 11th century.

According to Jan Długosz, on 6 May 1170 Duke Mieszko III and the bishop of Poznań set up a pilgrims' hospice there.

Around the beginning of the 13th century the Order began construction of a new church, which is essentially the building which survives to this day.

The Order was also granted land to the east and south of the church, now occupied by the Komandoria district and Lake Malta.

An original Romanesque window can also be seen on the eastern wall of the chancel (it became visible after a more modern vestry was demolished).

The chancel has a late Gothic triptych made in a local workshop around 1520, and significantly restored after sustaining damage in the Second World War.

It shows the sacra conversazione between the Virgin Mary, John the Baptist and Saint Stanisław.