19

Nineteen or 19 may refer to:
 * 19 (number), the natural number following 18 and preceding 20
 * one of the years 19 BC, AD 19, 1919, 2019

Films

 * 19 (film), a 2001 Japanese film
 * Nineteen (film), a 1987 science fiction film

Science

 * Potassium, an alkali metal
 * 19 Fortuna, an asteroid

Music

 * 19 (band), a Japanese pop music duo

Albums

 * 19 (Adele album), 2008
 * 19, a 2003 album by Alsou
 * 19, a 2006 album by Evan Yo
 * 19, a 2018 album by MHD
 * 19, one half of the double album 63/19 by Kool A.D.
 * Number Nineteen, a 1971 album by American jazz pianist Mal Waldron
 * XIX (EP), a 2019 EP by 1the9

Songs

 * "19" (song), a 1985 song by British musician Paul Hardcastle
 * "Nineteen", a song from the 1992 album Refugee by Bad4Good
 * "Nineteen", a song from the 2001 album Almost Heathen by Karma to Burn
 * "Nineteen" (song), a 2007 song by American singer Billy Ray Cyrus
 * "Nineteen", a song from the 2007 album The Con by Tegan and Sara
 * "XIX" (song), a 2014 song by Slipknot
 * 19, a song from the 2001 album Heartbreak in Stereo by Pencey Prep

Companies

 * 19 Entertainment, an company owned by Sony Pictures Television