Harald Mogensen Thamdrup (17 May 1908 – 13 November 1998) was a Danish biologist and science organizer. Thamdrup was a professor of zoology at Aarhus University 1959-1975 – the first in that chair. He also served as a director of the Natural History Museum, Aarhus 1941-1978 and founded the research station Mols Laboratory (Molslaboratoriet) in 1941 and in 1949 theWildlife Biological Station (Vildtbiologisk Station) at Kalø which he led for 30 years.