Sándor Szalay (born 4.10.1909) — Hungarian physicist, a member of the Hungarian Academy of Sciences (1965). Graduated from the University of Budapest (1931). A professor at the university and in 1954 —75 director of the Institute of Nuclear Research in Debrecen.
His work concerned nuclear physics, nuclear engineering, nuclear spectroscopy, neutron physics and the geochemistry of uranium. He was one of the first to consider the role of the rest mass of the neutrino in cosmology.
The L. Kossuth Prize (1952) and others.