Nedre Slettheia is a neighbourhood in the city of Kristiansand in Agder county, Norway. It is located in the borough of VÃÂ¥gsbygd and in the district of Slettheia. Nedre Slettheia is south of Rugde, northeast of Gislemyr, west of Blørstad, and east of ÃÂvre Slettheia.