Thetford Priory is a Cluniac monastic house in Thetford, Norfolk, England. Founded in 1103 by Roger Bigod of Norfolk, Thetford was one of the most important monasteries of East Anglia.

Thetford is a market town and civil parish in the Breckland District of Norfolk, England. It is on the A11 road between Norwich and London, just east of Thetford Forest. The civil parish, covering an area of 29.55 km2 (11.41 sq mi), in 2011 had a population of 24,340.