St Peter Mancroft is a parish church in the Church of England in the centre of Norwich, Norfolk. After the two cathedrals, it is the largest church in Norwich. It was originally established by Ralph de Gael, Earl of East Anglia, between 1066 and 1075. It was later rebuilt, between 1430 and 1455. It stands on a slightly elevated position, next to the market place.

Norwich is a cathedral city and district of the county of Norfolk, England of which it is the county town. Norwich is by the River Wensum, about 100 mi (160 km) north-east of London, 40 mi (64 km) north of Ipswich and 65 mi (105 km) east of Peterborough. As the seat of the See of Norwich, with one of the country's largest medieval cathedrals, it is the largest settlement and has the largest urban area in East Anglia. The population of the Norwich City Council local authority area was estimated to be 144,000 in 2021, which was an increase from 143,135 in 2019. The wider built-up area had a population of 213,166 in 2019.