Severin Andreas Heyerdahl

Severin Andreas Heyerdahl (28 August 1870 – 26 June 1940) was a Norwegian physician. He was a pioneer in the use of radiology and radiation therapy in Norway.

He was hired as the manager of the x-ray department at Rikshospitalet in 1899. He took his dr.med. degree at the University of Oslo in 1910 and worked as a lecturer in radiology from 1919. He was then instrumental in the establishment of the Norwegian Radium Hospital (Radiumhospitalet) in 1932. Heyerdahl served as chief physician from 1932 to 1938, and director from 1932 to 1939.