XIII may refer to:

  • 13 (number) or XIII in Roman numerals
  • 13th century in Roman numerals
  • XIII (comics), a Belgian comic book series by Jean Van Hamme and William Vance
  • XIII (2003 video game), a 2003 video game based on the comic book series
  • XIII (2020 video game), a remake of the 2003 video game
  • XIII: The Conspiracy, a TV miniseries based on the comic book series and game of the same title
  • XIII: The Series, a 2011 TV series based on the comic book series and miniseries
  • XIII (Rage album), 1998
  • XIII (Mushroomhead album), 2003
  • XIII (TNT album), 2018
  • Factor XIII, a clotting factor inside the coagulation cascade
  • Rugby league, still often known as just XIII in France due to the name Rugby once being forbidden for the league code

See also

  • Thirteen (disambiguation)
  • Number 13 (disambiguation)
  • Red XIII, a character from Final Fantasy VII
  • Organization XIII, a fictional organization from the Kingdom Hearts series
  • Final Fantasy XIII, a 2009 video game
  • The Land Before Time XIII: The Wisdom of Friends, a 2007 film
  • The King of Fighters XIII, a 2010 fighting video game