12 Days

12 Days may refer to:

See also:
 * 12 Days (book), graphic novel/global manga by June Kim
 * 12 Days (film), French documentary
 * Twelve days of Christmas, holiday period
 * "The Twelve Days of Christmas" (song)
 * The Twelve Days of Christmas (disambiguation)
 * 12 Days of Terror, film
 * 12 Days of Brumalia, music event
 * "The 12 Days of Christine", episode of Inside No. 9