All Quiet on the Western Front is a 1930 American pre-Code epic anti-war film based on the 1929 novel of the same name by German novelist Erich Maria Remarque. Directed by Lewis Milestone, it stars Lew Ayres, Louis Wolheim, John Wray, Slim Summerville, and William Bakewell.

The film opened to wide acclaim in the United States. Considered a realistic and harrowing account of warfare in World War I, it made the American Film Institute's first 100 Years...100 Movies list in 1997. A decade later, after the same organization polled over 1,501 workers in the creative community, All Quiet on the Western Front was ranked the seventh-best American epic film.

In 1990, it was selected and preserved by the United States Library of Congress' National Film Registry, being deemed "culturally, historically, or aesthetically significant". The film was the first to win the Academy Awards for both Outstanding Production and Best Director, and it is the first Best Picture-winner based on a finished novel. Due to being a film published in 1930, it will enter the public domain on January 1, 2026, following the expiration of the copyright on the novel in 2024.

A sequel to the film, The Road Back (1937), portrays troops from 2nd Company returning home after the end of WWI.