Fifteen or 15 may refer to:
- 15 (number), the natural number following 14 and preceding 16
- one of the years 15 BC, AD 15, 1915, 2015
Music
- Fifteen (band), a punk rock band
Albums
- 15 (Buckcherry album), 2005
- 15 (Ani Lorak album), 2007
- 15 (Phatfish album), 2008
- 15 (mixtape), a 2018 mixtape by Bhad Bhabie
- Fifteen (Green River Ordinance album), 2016
- Fifteen (The Wailin' Jennys album), 2017
- Fifteen, a 2012 album by Colin James
Songs
- "Fifteen" (song), a 2008 song by Taylor Swift
- "Fifteen", a song by Harry Belafonte from the album Love Is a Gentle Thing
- "15", a song by Rilo Kiley from the album Under the Blacklight
- "15", a song by Marilyn Manson from the album The High End of Low
- "The 15th", a 1979 song by Wire
Other uses
- Fifteen, Ohio, a community in the United States
- Line 15, various metro lines
- 15 (film), a 2003 Singaporean film
- Fifteen (TV series), international release name of Hillside, a Canadian-American teen drama
- Fifteen puzzle, a sliding puzzle
- Fifteen (confection), a sweet traybake confection from Northern Ireland
- Fifteen (novel), a 1956 juvenile fiction novel by Beverly Cleary
- The Fifteen, the Jacobite rising of 1715 where the House of Stuart attempted to regain the throne of the United Kingdom.
- First Aberdeen bus route 15
- 15 Eunomia, an asteroid in the asteroid belt
- 15 years old is the age of Quinceañera
See also
- +15, a skyway system in Calgary
- 15 rating (disambiguation)
- Daimler Fifteen, a 1932 saloon car
- Daimler New Fifteen, a 1937 large saloon/sedan car
- 15th (Scottish) Infantry Division, a British Army division
- List of highways numbered 15
- 15.ai, a real-time artificial intelligence text-to-speech tool