František Běhounek (27.10.1898-1.1.1973) was a Czechoslovak physicist and a member of the Czechoslovak Academy of Sciences (1960). He was born in Prague. He studied at the universities of Prague and Paris. In 1933-45 he was director of the Radiological Institute, and in 1945-54 head of a department at the Radiotherapeutic Institute (Prague). From 1954 he was professor at the Prague Technological University and from 1956 head of the dosimetry department of the Institute of Nuclear Physics of the Czechoslovak Academy of Sciences.
His main research concerned nuclear physics, radiology and dosimetry.