Lunner is a municipality in Oppland county, Norway. It is part of the traditional region of Hadeland. The administrative centre of the municipality is the village of Roa. Lunner was established when it was separated from the municipality of Jevnaker on 1 January 1898.The municipality (originally the parish) is named after the old Lunner farm (Old Norse: Lunnar), since the first church was built here. The name is the plural form of lunnr which means "log". (The farm and the church are located on a long hill which was probably compared to a log.)
The coat-of-arms is from modern times. They were granted on 4 April 1986. The arms show a Lily of the Valley, as a symbol for the forests in the area. The Lily of the Valley is a very common flower in the meadows and forests. The flowers also symbolize the eight schools in the municipality.