Louis Leprince-Ringuet (born 27.03.1901) is a French physicist and a member of the Paris Academy of Sciences (1949). He was born in Alès. He studied at the École Polytechnique and at the Higher School of Electrical Engineering. In 1936—69 he was professor at the École Polytechnique, and in 1959—72 at the Collège de France. In 1964—66 he was president of the Scientific Council of CERN.
His work was in the field of X-rays, nuclear physics, the physics of cosmic rays and elementary particles. He obtained (1944) the first experimental indication of the existence of K mesons, and independently of others he discovered (1954) the xi-minus hyperon.
In 1956 he was president of the French Physical Society.