Twelve or 12 may refer to:
12 (number)one of the years 12 BC, AD 12, 1912, 2012ميخغتDecember, the twelfth month of the year12: The Elements of Great Managing, a 2006 bestselling business book by Rodd Wagner and James K. HartjkerTwelve (novel), 2002 novel by Nick McDonellTwelve, a 2007 novel by Lauren Myracle, part of The Winnie YearsTwelve (publisher), an imprint of Grand Central PublishingTwelve, a 2009 novel by Jasper KentFilm and TV
Twelve (film), 2010 film based on the 2002 novel12 (2007 film), 2007 film by Russian director and actor Nikita Mikhalkov12 (2003 film), 2003 film by American filmmaker Lawrence BridgesTwelve (Street Fighter), a video game character from the Street Fighter seriesAlbumsTwelve (Patti Smith album), 2007Twelve (Cobalt 60 album)12 (Herbert Grönemeyer album), 200712 (Keller Williams album), 200712 (The Notwist album), 199512 (Fiskales Ad-Hok album)12!, Sonny Stitt album, 197212 (ASAP Twelvyy album), 201712 (BMT rapid transit service), the Brooklyn-Manhattan Transit Corporation's designation for trains that used the BMT Lexington Avenue Line12th man (football) fans of American football.