Madame X is a 1908 stage play with numerous adaptations.

Madame X or Madam X may also refer to:

• Madame X (1916 film), starring Dorothy Donnelly
• Madame X (1920 film), starring Pauline Frederick
• Madame X (1929 film), starring Ruth Chatterton
• Madame X (1937 film), starring Gladys George
• Madame X (1952 film), starring Gloria Romero
• Madame X (1954 film), a Greek drama film
• Madame X (1955 film), a Mexican drama film
• Madame X (1966 film), starring Lana Turner
• Madame X: An Absolute Ruler, 1978 German fantasy film directed by Ulrike Ottinger
• Madame X (1981 film), starring Tuesday Weld
• Madam X (1994 film), starring Rekha
• Madame X (2000 film), starring Ina Raymundo
• Madame X (2021 film), a documentary film about Madonna's Madame X Tour

• Madam X (band), an American rock group formed in 1982
• Madame X (album), 2019 release by Madonna
  • Madame X Tour, associated concert tour

• Madame X, a character played by Anne Brochet in The Story of Marie and Julien
• Madame X (device), a bombe cryptanalyser used by the US Army during World War II
• Madame Xanadu, a 2012 comic called "Madame X" which featured this character under DC's "National Comics" imprint
• "Madame X", internal code name for the Pontiac Phantom concept car
• Madame X, a nickname of American singer Madonna, given by Martha Graham
• Madame X, a nickname for Agnes Meyer Driscoll, an 20th-century American cryptanalyst.
• Limeslade Mystery, also known as the Madame X Mystery

• The Trial of Madame X, 1948 film
• The Strange Madame X, 1951 film
• Portrait of Madame X, an 1884 portrait of Virginie Amélie Avegno Gautreau by John Singer Sargent
• Miss X (disambiguation)
• Lady X (disambiguation)
• Mister X (disambiguation)

This disambiguation page lists articles associated with the title Madame X.
If an internal link led you here, you may wish to change the link to point directly to the intended article.