90 Days or 90 Day may refer to:
Film 90 Days (film), a 1985 Canadian comedy 90 Days (video report), a video news magazine produced by McDonnell Douglas 90 Day Wondering, a 1956 Warner Bros. cartoon made for the US Army Mission 90 Days, a 2007 Indian Malayalam-language film
Music "90 Days", a song by Pink from Hurts 2B Human (2019) 90 Day Men, an American progressive rock band
Television 90 Days, Time to Love, a 2006 South Korean television series 90 Day Fiancé, an American reality television series