"Millennium" is a period of one thousand years. It's also a common name for works of fiction. It may refer to:
- Millennium (1983), the 1983 John Varley novel.
- Millennium (1989) the 1989 movie based on the John Varley novel.
- Millennium (1988), the 1988 DC Comics crossover miniseries.
- Millennium (1996), the 1996 TV show created by Chris Carter.
- Millennium Series, a novel series started by Stieg Larsson, or the films based on them.
- The Millennium Trilogy, the Swedish film adaptation.
- Millennium (My Little Pony: Friendship is Magic), the My Little Pony Dark Fic.
