Østlandet
Southern Norway Regional Health Authority () was a regional health authority that covered the counties of Aust-Agder, Buskerud, Telemark, Vest-Agder and Vestfold in Norway, as well as the national hospitals in Oslo. The authority was founded on January 1, 2002, but merged with the Eastern Norway Regional Health Authority to form the new Southern and Eastern Norway Regional Health Authority on June 1, 2007.