Sigmund A. Anderssen (born 26 September 1961) is a professor in physical activity and health in the Department of Sports Medicine at the Norwegian School of Sport Sciences.
He also holds a position as adjunct professor at Sogn og Fjordane University College, Faculty of Teacher Education and Sport.
He is chair of the National Council on Physical Activity, and a past member of the Medical Council of the Norwegian Diabetes Federation.
He has been one of the main authors of the Norwegian and the Nordic physical activity recommendations.
He was awarded The Norwegian Medical Association's prize in Preventive Medicine in 2001[1] and the Messner Prize in 2008 for excellence in research and ethics in sports medicine.