Severin Andreas Heyerdahl

Severin Andreas Heyerdahl (28 August 1870 – 26 June 1940) was a Norwegian physician, radiologist and hospital director.

He was the son of Severin Andreas Heyerdahl (1818-75) and Ragna Møller (1832-1926).

Together with Hans L. C. Huitfeldt, he co-founded the cancer treatment clinic Kristiania Radium-Institutt in 1913.

From 1919 he was a senior doctor at the Rikshospitalet and a lecturer in radiology at the University of Oslo.

He was instrumental in the establishment of the Norwegian Radium Hospital (Radiumhospitalet) in 1932.