Jan Raa (born 11 October 1939) is a Norwegian biologist.
Raa was a professor at the University of Tromsø from 1972 to 1988, and has an honorary degree at the same university. After his tenure at the University of Tromsø he was a director at the Directorate of Fisheries Institute of Nutrition, research director at Fiskeriforskning and developer of the company Biotec Pharmacon.