Léon Rosenfeld (14 August 1904, Charleroi – 23 March 1974) was a Belgian physicist. He obtained a PhD at the University of Liège in 1926, and he was a collaborator of the physicist Niels Bohr. He did early work in quantum electrodynamics that predates by two decades the work by Dirac and Bergmann. He coined the name lepton. In 1949 Léon Rosenfeld was awarded the Francqui Prize for Exact Sciences.
- ^ Léon Rosenfeld's Marxist defense of complementarity, by Anja Skaar Jacobsen 
- ^ Leon Rosenfeld and the challenge of the vanishing momentum in quantum electrodynamics, by Donald Salisbury 
- ^ Rosenfeld, Léon (1948). Nuclear Forces. Interscience Publishers, New York, xvii.