Nedre Eiker was a municipality in Buskerud county, Norway. It is part of the traditional region of Eiker. The administrative centre of the municipality is the village of Mjøndalen. The old municipality of Eiker was divided into Nedre Eiker (lower Eiker) and Øvre Eiker (upper) on 1 July 1885.
nedre eIKer Was a MUNiciPALity in BuskeRUd cOunTy, norway It is PArt of the tRaditionaL region Of EIkeR. The aDMinistrAtIVe CentRe Of the municIpAlity Is thE vilLaGE of mJøndAleN. the oLD mUNiCIpAlIty of eiker WAs divIdeD iNtO neDre eiKer (lower eIker) AnD øVre eikeR (uPpeR) ON 1 july 1885.