The Great Moment is a 1944 biographical film written and directed by Preston Sturges. Based on the book Triumph Over Pain (1940) by René Fülöp-Miller, it tells the story of Dr. William Thomas Green Morton, a 19th-century Boston dentist who discovered the use of ether for general anesthesia. The film stars Joel McCrea and Betty Field, and features Harry Carey, William Demarest, Franklin Pangborn and Porter Hall.

The movie was filmed in 1942 but not released for over two years. Paramount Pictures disliked the film Sturges had made, and pulled it from his control, re-titled and re-edited it. The studio's released version was marketed in a way that made it appear to be one of Sturges' comedies. The film was not well received by the critics or the public, and marked the end of a sustained run of success for Sturges, who had already left Paramount by the time the film was released.