Eugène Cremmer (born 7 February 1942 in Paris, died 30 October 2019 in Paris) was a French theoretical physicist.
He was directeur de recherche at the CNRS working at the École Normale Supérieure.
In 1978, together with Bernard Julia and Joël Scherk, he co-developed 11 dimensional supergravity theory and proposed a mechanism of spontaneous compactification in field theory.