|Died||December 29, 1940 (aged 70)|
|Occupation||Doctor and Biologist|
|Known for||Founder of the Curie Institute of Paris|
Claudius Regaud (born 30 January 1870 in Lyons, France; died 29 December 1940 in Couzon-au-Mont-d'Or, France) was a French doctor and biologist, one of the pioneers in radiotherapy at the Curie Institute.
In 1906, Regaud discovered that one of the effects of X-ray treatment is sterility. He deduced that X-rays could also be used against rapidly growing cells other than gametes and, thus, against cancerous tumors. He proceeded to conduct the first experiments in this area. In 1912, at the Curie Institute, he was given responsibility for the Pasteur Laboratory, with the mission to study the biological and medical effects of radioactivity. The Curie laboratory, in contrast, dealt with research in the fields of physics and chemistry.
- "Portrait de Médecins" [Portraits of Physicians]. Medarus (in French). Archived from the original on 10 September 2013. Retrieved 25 April 2014.
- Prigent, Anne (10 August 2012). "Marie Curie à l'origine de la radiothérapie" [Marie Curie on the origin of radiotherapy]. Le Figaro (in French). Retrieved 25 April 2014.
- "2009, Centenaire de l'Institut Curie" [2009: Centenary of the Curie Institute]. Curie Institute of Paris (in French). 8 June 2010. Archived from the original on 25 July 2014. Retrieved 25 April 2014.
- "Claudius Regaud (1870-1940)" (in French). Musée Curie. Retrieved 25 April 2014.