A Trekkie or Trekker is a fan of the Star Trek franchise, or of specific television series or films within that franchise.
In 1967, science fiction editor Arthur W. Saha applied the term "trekkies" when he saw a few fans of the first season of Star Trek: The Original Series wearing pointy ears at the 25th World Science Fiction Convention, on the day series creator Gene Roddenberry showed a print of "Amok Time" to the convention. Saha used the term in an interview with Pete Hamill that Hamill was conducting for TV Guide concerning the phenomenon of science fiction.
Many early Trekkies were also fans of The Man From U.N.C.L.E. (1964–1968), another show with science fiction elements and a devoted, "cult"-like audience. The first Star Trek fanzine, Spockanalia, appeared in September 1967, including the first published fan fiction based on the show. Roddenberry, who was aware of and encouraged such activities, a year later estimated that 10,000 wrote or read fanzines. The mainstream science fiction magazine If published a poem about Spock a year later, accompanying a Virgil Finlay portrait of the Vulcan.
Perhaps the first large gathering of fans occurred in April 1967. When Leonard Nimoy appeared as Spock as grand marshal of the Medford Pear Blossom Festival parade in Oregon, he hoped to sign hundreds of autographs but thousands of people appeared; after being rescued by police "I made sure never to appear publicly again in Vulcan guise", the actor wrote. Another was in January 1968, when more than 200 Caltech students marched to NBC's Burbank, California studio to support Star Trek's renewal.