The Son of Monte Cristo is a 1940 American black-and-white swashbuckling adventure film from United Artists, produced by Edward Small, directed by Rowland V. Lee, that stars Louis Hayward, Joan Bennett, and George Sanders. The Small production uses the same sets and many of the same cast and production crew as his previous year's production of The Man in the Iron Mask. Hayward returned to star in Small's The Return of Monte Cristo (1946).

The film takes the same name as the unofficial sequel to The Count of Monte Cristo, namely The Son of Monte Cristo, written by Jules Lermina in 1881.

Using elements from several romantic swashbucklers of the time such as The Prisoner of Zenda and The Mark of Zorro the production also mirrors the situation of Continental Europe in 1939–1940.