
The Man in the Iron Mask was an unidentified prisoner who was arrested in 1669 or 1670 and subsequently held in a number of French prisons, including the Bastille and the Fortress of Pignerol. He was held in the custody of the same jailer, Bénigne Dauvergne de Saint-Mars, for a period of 34 years. He died on 19 November 1703 under the name Marchioly, during the reign of King Louis XIV of France (1643–1715).
Étienne Bazeries was a French military cryptanalyst active between 1890 and the First World War. He is best known for developing the "Bazeries Cylinder", an improved version of Thomas Jefferson's cipher cylinder. It was later refined into the US Army M-94 cipher device. Historian David Kahn describes him as "the great pragmatist of cryptology. His theoretical contributions are negligible, but he was one of the greatest natural cryptanalysts the science has seen."

Bénigne d'Auvergne de Saint-Mars was a French prison governor in the late 17th and early 18th century. He is best known as the apparent keeper of the Man in the Iron Mask. According to letters written by Saint-Mars to various officials and ministers of France, he had in his custody a prisoner of State, whom he carried with him from Pinerolo to the Lérins Islands, and later to the Bastille.

The Fifth Musketeer is a 1979 German-Austrian film adaptation of the last section of the 1847–1850 novel The Vicomte of Bragelonne: Ten Years Later by Alexandre Dumas, père, which is itself based on the French legend of the Man in the Iron Mask. It was released in Europe with the alternative title Behind the Iron Mask.

The Iron Mask is a 1929 American part-talkie adventure film directed by Allan Dwan. It is an adaptation of the last section of the 1847-1850 novel The Vicomte de Bragelonne by Alexandre Dumas, père, which is itself based on the French legend of the Man in the Iron Mask.

Lady in the Iron Mask is a 1952 American adventure film directed by Ralph Murphy, produced by Walter Wanger and starring Louis Hayward as D'Artagnan and Patricia Medina in the titular role. Alan Hale, Jr. portrays Porthos, Judd Holdren plays Aramis, and Steve Brodie appears as Athos in this Three Musketeers adventure film, a reworking of Douglas Fairbanks' 1929 screen epic The Iron Mask, an adaptation of the last section of the 1847-1850 novel The Vicomte de Bragelonne by Alexandre Dumas, père, which is itself based on the French legend of the Man in the Iron Mask.

The Man in the Iron Mask is a 1939 American film very loosely adapted from the last section of the 1847-1850 novel The Vicomte de Bragelonne by Alexandre Dumas, père, which is itself based on the French legend of the Man in the Iron Mask.

The Man in the Iron Mask is a 1977 television film loosely adapted from the 1847-1850 novel The Vicomte de Bragelonne by Alexandre Dumas and presenting several plot similarities with the 1939 film version. It was produced by Norman Rosemont for ITC Entertainment, and starred Richard Chamberlain as King Louis XIV and his twin Philippe, Patrick McGoohan as Nicolas Fouquet, Ralph Richardson as Jean-Baptiste Colbert, Louis Jourdan as D'Artagnan, and Ian Holm as the Chevalier Duval. Jenny Agutter plays Louis XIV's mistress, Louise de la Vallière and Vivien Merchant appears as Queen Marie-Therese. It was directed by Mike Newell.

The Man in the Iron Mask is a 1998 American action drama film directed, produced, and written by Randall Wallace, and starring Leonardo DiCaprio in a dual role as the title character and villain, Jeremy Irons as Aramis, John Malkovich as Athos, Gérard Depardieu as Porthos, and Gabriel Byrne as D'Artagnan. The picture uses characters from Alexandre Dumas's D'Artagnan Romances and is very loosely adapted from some plot elements of his 1847-1850 novel The Vicomte de Bragelonne.

Le Masque de fer is a 1962 French film directed by Henri Decoin, based on the 1850 novel The Vicomte of Bragelonne: Ten Years Later by Alexandre Dumas and specifically part 3 of the novel, The Man in the Iron Mask; which in turn is based on the real-life story of the Man in the Iron Mask.

The Vicomte of Bragelonne: Ten Years Later is a novel by Alexandre Dumas. It is the third and last of The d'Artagnan Romances, following The Three Musketeers and Twenty Years After. It appeared first in serial form between 1847 and 1850.