St. Catherine's Church (Finnish: Pyhän Katariinan kirkko, Swedish: S:ta Katarina kyrka) is located in Nummi, a suburb of Turku, Finland, in the same district as Turku Student Village. It represents old medieval stone church building tradition. Although it was once completely destroyed and has undergone several renovations, it has preserved something of its original appearance and retains the basic plan of a medieval Finnish church. The construction was begun in the 1340s, the sacristy being completed first and the church later.