Mautby is a civil parish in the English county of Norfolk. The parish comprises a largely rural area along the north bank of the River Bure, and includes the village of Mautby, as well as Runham and Thrigby which became part of the parish in 1935. It is located some 10 km (6.2 mi) west of the town of Great Yarmouth and 30 km (19 mi) east of the city of Norwich.
The civil parish has an area of 16.6 km2 (6.4 sq mi) and in the 2001 UK census had a population of 395 in 145 households, the population reducing to 383 at the 2011 UK census. For the purposes of local government, the parish falls within the district of Great Yarmouth.