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, increasing to a population of 319 at the 2011 Census. 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. It is the limit of Broads navigation for larger boats, but small boats, and especially non-powered boats, can travel on the North Walsham & Dilham Canal until Honing.
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.