Holy Trinity church in Leżajsk, Catholic church near Market Square, Leżajsk, Poland.

Holy Trinity Church is a religious building in Leżajsk with white walls and a red tiled roof, displaying traditional Polish architecture from the 17th century. The structure features a main nave with side aisles, several chapels, and an ornately decorated altar area.

Construction began in 1604 after the wooden church was demolished, but Stadnicki destroyed the work in 1608. The church was completed in 1616 and consecrated in 1619. In 1624 it withstood a Tatar raid, and in 1656 it was damaged by Swedish troops.

In the altar on the right side of the main nave hangs a 16th-century painting of the Virgin Mary, older than the church itself. The building is surrounded by a high wall pierced with loopholes, a reminder that the church also served as a defensive refuge.

The church is accessible daily, with the best visiting opportunities during morning and evening mass services. Visitors should note that interior areas may be less accessible during religious celebrations and ceremonies.

The church is enclosed by a tall wall pierced with loopholes, a defensive feature tied to the building's history: in 1624 it withstood a Tatar raid, and in 1656 it was damaged by Swedish troops. The wall is the element visitors most often overlook.