Eugène Bloch (10 June 1878 – 1944) was a French physicist and professor at the École Normale Supérieure, and at the Faculty of Science of the University of Paris.
His father, an industrialist in the textile industry, sold his Alsatian factory and settled in Paris to give his two sons Leon and Eugène a French education.
In 1906 Eugène Bloch became professor of physics in the special mathematics class at the Saint-Louis secondary school in Paris, where he taught for eleven years.
In addition to his teaching, Eugène Bloch also carried out research in the physics laboratory of the École Normale Supérieure on the photoelectric effect and spectroscopy.
In 1940 Eugène Bloch was dismissed from his professorship following the anti-Jewish laws of the Vichy government and had to leave the École Normale Superieure.