In 1933, he made Bitter Sweet, his first English language movie, which became more famous in its 1940 incarnation with Jeanette MacDonald and Nelson Eddy.

The first two films he made in Hollywood were for Warner Brothers: The King and the Chorus Girl (1937), with Joan Blondell and Jane Wyman, and Fools for Scandal (1938), with Carole Lombard and Ralph Bellamy.

Gravey then signed with Metro-Goldwyn-Mayer and was cast as Johann Strauss in the expensive biopic The Great Waltz, with Luise Rainer and Miliza Korjus.

MGM next planned to star Gravey in a film version of Rafael Sabatini's adventure novel Scaramouche, but instead he returned to France just before the Nazi occupation began.

Among his last English language performances were How to Steal a Million (1966), Guns for San Sebastian (1968) and The Madwoman of Chaillot (1969), in which he played the police inspector.