Wonder Story Annual was a science fiction pulp magazine which was launched in 1950 by Standard Magazines. It was created as a vehicle to reprint stories from early issues of Wonder Stories, Startling Stories, and Wonder Stories Quarterly, which were owned by the same publisher. It lasted for four issues, succumbing in 1953 to competition from the growing market for paperback science fiction. Reprinted stories included Twice in Time, by Manly Wade Wellman, and "The Brain-Stealers of Mars", by John W. Campbell.
The first science fiction (sf) magazine, Amazing Stories, was launched in 1926 by Hugo Gernsback at the height of the pulp magazine era. It helped to form science fiction as a separately marketed genre, and by the mid-1930s several more sf magazines had appeared, including Wonder Stories, also published by Gernsback. In 1936, Ned Pines of Beacon Publications bought Wonder Stories from Gernsback, changed the title to Thrilling Wonder Stories, and in 1939 and 1940 added two more sf titles: Startling Stories and Captain Future. Pines had acquired reprint rights to the fiction published in Wonder Stories as part of the transaction, and some of this material ran in Startling Stories and Captain Future, but neither magazine had room for some of the longer stories in the backfile. At the end of the 1940s a boom in science fiction magazines encouraged Pines to issue a new magazine, titled Fantastic Story Quarterly, as a vehicle for reprinting this older material, with the first issue dated Spring 1950. It was successful enough for Pines to add another reprint magazine, Wonder Story Annual, later that year. Pines' plan was to use the new magazine to reprint novels, with only a few short stories included to fill out the magazine. The first issue was dated 1950 and appeared in the summer of that year.