Church of Saint Casimir in Pruszków, Gothic Revival church building in Pruszków, Poland.

The Church of Saint Casimir is a Gothic Revival brick church designed by Czesław Domaniewski in 1902. Its walls were raised in stages: first to 5 metres, then under the roof by 1912, with the twin towers added in 1924–1926. The earlier wooden chapel stood inside the central nave during construction.

Construction of the church began in 1907 under the design of architect Czesław Domaniewski and continued until 1936, with the distinctive twin towers completed between 1924 and 1926 during the interwar period.

The church serves as the parish center for the local Catholic community in Pruszków, organizing religious festivals, blessing processions, and community events that maintain traditional Polish Catholic customs and spiritual practices.

Located at coordinates 52.1623 latitude and 20.8101 longitude, the church is easily accessible by public transportation and provides regular mass schedules, confession times, and pastoral services for residents and visitors.

The wooden chapel that stood on the site was enclosed within the central nave of the new brick church as construction advanced, so the older building was absorbed rather than demolished. A bell named "Jan", bought in 1910 by workers of the Fajans factory, hung in a wooden belfry by the chapel entrance until retreating Russian troops took it away in 1915.