Siuntio St. Peter's Church (fin. Siuntion Pyhän Pietarin kirkko, swe. Sjundeå S:t Petri kyrka) is a gothic medieval stone church in Siuntio, Uusimaa, Finland, located in the old church village of Siuntio. The church is built out of grey stone between the years 1460 and 1480 next to a small stone chapel which was owned by a nearby Suitia Manor. St. Peter's Church is divided into three naves by three pairs of pilars that hold the brick vaults. The church has been ravaged by fire four times.