4, 3, 2, 1

4, 3, 2, 1 or 4321 may refer to:

Film

 * 4.3.2.1., 2010 film by Noel Clarke
 * ...4 ..3 ..2 ..1 ...Morte, a 1967 Italian science fiction film

Music

 * "4, 3, 2, 1" (k-os song), song by k-os
 * "4, 3, 2, 1" (LL Cool J song), song by LL Cool J
 * "4-3-2-1", song by Raffi Boghosyan

Other uses

 * 4 3 2 1 (novel), 2017 novel by Paul Auster
 * 4–3–2–1, a common formation in association football