Dilham is a village and civil parish covering an area of with a population of 301 in 128 homes as of the 2001 census. It is on the River Ant just off the A149 road, near Stalham in Norfolk, England within The Broads. 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.