Niagara is a 1953 American film-noir thriller film directed by Henry Hathaway, produced by Charles Brackett, and written by Brackett, Richard L. Breen and Walter Reisch. The film stars Marilyn Monroe, Joseph Cotten, Jean Peters, and Max Showalter. It was one of 20th Century Fox's biggest box-office hits that year.

Joseph Cheshire Cotten Jr. was an American film, stage, radio and television actor. Cotten achieved prominence on Broadway, starring in the original stage productions of The Philadelphia Story (1939) and Sabrina Fair (1953). He then gained worldwide fame for his collaborations with Orson Welles on three films, Citizen Kane (1941), The Magnificent Ambersons (1942), and Journey into Fear (1943), which Cotten starred in and for which he was also credited with the screenplay.