The Futurians were a group of science fiction fans, many of whom became editors and writers as well. The Futurians were based in New York City and were a major force in the development of science fiction writing and science fiction fandom in the years 1937–1945.

Science fiction fandom or SF fandom is a community or fandom of people interested in science fiction in contact with one another based upon that interest. SF fandom has a life of its own, but not much in the way of formal organization.