Zero day

Zero day(s) may refer to:

Computing

 * Zero-day (computing), a software vulnerability unknown to those who should be interested in its mitigation
 * Zero Day Initiative, an international software vulnerability initiative
 * Zero-day warez, copyrighted software that is cracked on the same day it is released

Film and television

 * Zero Day (2003 film), an American film by Ben Coccio
 * Zero Days, a 2016 American documentary film
 * Zero Day (TV series), an upcoming American political thriller series
 * "Zero Day" (My Adventures with Superman), a 2023 TV episode
 * "Zero Day" (Person of Interest), a 2013 TV episode

Literature

 * Zero Day (novel), a 2011 thriller novel by David Baldacci
 * Zero Day, a 2011 novel by Mark Russinovich
 * Zero Days, a 2023 novel by Ruth Ware

Music

 * Zero Day (album) or the title song, by MC Frontalot, 2010
 * Zero Days (album) or the title song, by Prong, 2017