21

This is a disambiguation page.  could refer to:


 * 21 (game show), the infamous 1950s Game Show behind 1950s game show scandal
 * 21 (1918 film), starring Bryant Washburn and Gertrude Selby
 * 21 (1923 film), starring Richard Barthelmess and Dorothy Mackaill
 * Twenty-One (1991 film), a 1991 film starring Patsy Kensit
 * 21 (2008 film), the 2008 film starring Kevin Spacey, Laurence Fishburne, Jim Sturgess, and Kate Bosworth, about a bunch of MIT students who go to Vegas and make a lot of money via card counting.
 * 21 (2016 film), a 2016 Indian film
 * 21 Grams, a 2003 film starring Sean Penn, Naomi Watts, Danny Huston, and Benicio del Toro
 * either of the works named 21 Jump Street

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