Dilham is a village and civil parish in The Broads of Norfolk, England. At the 2001 census it covered an area of with a population of 301 in 128 homes. It is on the River Ant just off the A149 road, near Stalham. The name comes from the extensive fields of dill, a herb which was grown commercially here.
Its church, St Nicholas, is one of 124 existing round-tower churches in Norfolk. Attached to the nearby Dilham Hall is a fifteenth-century tower, all that remains of Dilham Castle, a fifteenth-century fortified house.