Valentine Louis Telegdi (Hungarian: Telegdi Bálint; 11 January 1922 – April 8, 2006) was a Hungarian-born U.S. physicist. He was the Enrico Fermi Distinguished Service Professor of Physics at the University of Chicago before he moved to ETH Zürich. After retiring from ETH he divided his time between CERN and the California Institute of Technology. Telegdi chaired CERN's scientific policy committee from 1981 to 1983. According to György Marx he was one of The Martians.