365tomorrows is a flash fiction website that provides a self-contained 800-word or less SF story per day. It began on August 1, 2005 and claims to continue until July 31, 2006.

365 is written and maintained by Kathy Kachelries, J.R. Blackwell, Jared Axelrod, J. Loseth, and B. York. The title is a play on Nine Tomorrows, one of Isaac Asimov's collections of short stories.

Most of the stories on 365tomorrows could be considered soft science fiction, though there are several exceptions.