Jan K S Jansen
- Category : 1931-births
- Type : GP
- Profile : 5/1 - Heretical / Investigator
- Definition : Split - Small (16,20)
- Incarnation Cross : LAX Obscuration 2
Norwegian physiologist specialising in neurophysiology. He was the son of professor of medicine Jan Birger Jansen. He studied at the University of Oslo under his father and Birger Kaada. In 1959 he started studies at the University Laboratory of Physiology in Oxford. He was hired as a docent at the University of Oslo in 1968 and was a professor there from 1979 to 1995.
Jansen died on 8 January 2011, aged 79.