Thin Man may refer to:

• The Thin Man, a 1933 mystery novel by Dashiell Hammett
  • The Thin Man (film) (1934), based on the novel
    • After the Thin Man (1936)
    • Another Thin Man (1939)
    • Shadow of the Thin Man (1941)
    • The Thin Man Goes Home (1945)
    • Song of the Thin Man (1947)
  • The Thin Man (TV series) (1957–1959), an NBC TV series based on the novel
• Thin Man (nuclear bomb), an early nuclear weapon design named after Dashiell Hammett's character.
• The Thin Man, a character in the 1927 German expressionist film Metropolis
• Thin Man (comics), a Marvel Comics character, unrelated to Hammett's novel
• The Thin Man, a character in the Charlie's Angels film series
• Noble "Thin Man" Watts (1926–2004), American blues musician
• Thin Man (band), Chinese punk band
• Thin Man Films, a British film production company
• Thin Man Press, a London-based publisher
• "Thin Man", a song by Suzanne Vega from her 1996 album Nine Objects of Desire

See also

• "Ballad of a Thin Man", a 1965 song by Bob Dylan
• Slender Man, a fictional supernatural character that originated as a creepypasta Internet meme in 2009