St. Peter's Church is a Roman Catholic church located on Jewry Street in Winchester, Hampshire, England. The first church was built by the Anglo-Saxons by the 9th century AD. The Catholic community survived the English Reformation; by 1575, there were enough Catholics to constitute the only "district" in Southern England. Mass was said at My Lady West's House on Fishmonger Street from 1579 to 1583, and a chapel was built there in 1740. A new chapel was consecrated on 5 December 1792, and the new St. Peter's Church was built from 1924 to 1926 and consecrated on 22 September 1938.