Vagary was a science fiction fanzine by Roberta Gray, previously known as Roberta Wild, and commonly known as Bobbie Gray.
Vagary was published in London, England, UK. The first issue came out in August 1956 and Roberta Gray continued to publish it until the 1970s. The last issue, #32, appeared in 1976, after two decades of publication. Vagary was an APAzine, distributed by the Offtrails Magazine Publishers Association (OMPA), for which Gray also edited the official organ Off Trails.
In 1958, Vince Clarke wrote, "...new British publishing fan Bobbie Wild probably ran away with the year's honours in material, publishing at 93 pages!" The June 1962 issue of Vagary was a more conservative 32 pages.
Vagary was voted one of the top ten fanzines in the Skyrack Fan Poll for 1962. Roberta Gray was voted one of the ten best Fan Writers for the same year.
Roberta Gray was also one of the editors of Vector for several issues, and also served as Vice President of the British Science Fiction Association (BSFA).