The Man in the Iron Mask is a 1998 American action drama film written, directed, and produced by Randall Wallace in his directorial debut. It stars Leonardo DiCaprio in a dual role as the title character and the villain, Jeremy Irons as Aramis, John Malkovich as Athos, Gérard Depardieu as Porthos, and Gabriel Byrne as D'Artagnan. Some characters are from Alexandre Dumas's D'Artagnan Romances and some plot elements are very loosely adapted from his 1847–1850 novel The Vicomte de Bragelonne. This was Leonardo DiCaprio's first film following the success of Titanic (1997).

Leonardo Wilhelm DiCaprio is an American actor, filmmaker, and philanthropist. Known for his work in biographical and period films, he is the recipient of numerous accolades, including an Academy Award, a British Academy Film Award, and three Golden Globe Awards. As of 2019, his films have grossed over $7.2 billion worldwide, and he has been placed eight times in annual rankings of the world's highest-paid actors.