Church of St. Joseph in Sandomierz, Baroque church in Sandomierz, Poland.

The Church of St. Joseph is a Baroque brick structure in Sandomierz with architectural features typical of 17th-century religious buildings in southeastern Poland. The complex includes the main church and an attached monastery with various rooms and courtyards.

The Reformat Franciscans settled in Sandomierz in 1672 with the consent of Kraków bishop Andrzej Trzebicki. The brick church, funded by Aleksander Michał Lubomirski, Jan Kurdwanowski, Piotr Opocki and Marcin Dębski, was consecrated on 24 October 1690 by auxiliary bishop Stanisław Szembek, and a three-winged monastery rose at the same time. After a fire in 1809 it was reconsecrated in 1824 by bishop Adam Prosper Burzyński; Russian authorities expelled the monks in 1863, and in 1934 it became a parish seat.

The church was built for the Reformed Franciscans, who settled in Sandomierz in 1672 with the consent of Kraków bishop Andrzej Trzebicki. In 1863 the Russian authorities removed the monks and took over the monastery; from 1864 vicars-rectors cared for the church. Since 1934, by decision of bishop Włodzimierz Jasiński, it has been a parish church.

The church belongs to the Sandomierz deanery of the Diocese of Sandomierz and has served as a parish church since 1934, when Bishop Włodzimierz Jasiński made that decision. The former monastery buildings stand next to it; the church itself is the part tied to parish life today.

The church is one of the monuments included in the Sandomierz historic architectural and landscape complex, entered on Poland's list of Historic Monuments on 22 November 2017 by decision of President Andrzej Duda. The entry also covers the cathedral basilica, the Opatowska Gate, the town hall and the Queen Jadwiga Ravine.