Day One
Day One stands for:
- Day One (band) , British band
- Day One , Original title of Die Bombe (1989) , American film directed by Joseph Sargent
- Day One , alternative title from To Write Love on Her Arms (film) , American film by Nathan Frankowski (2012)
- Day One (2015) , American short film directed by Henry Hughes
- Day One (newscast) , American news broadcast (1993-1995)