Storm Constantine (12 October 1956 – 14 January 2021) was a British science fiction and fantasy author, primarily known for her Wraeththu series, which began as one trilogy but has spawned many subsequent works.
Beginning in the 1980s, Constantine's short stories appeared in dozens of genre fiction magazines and anthologies. She authored over 30 published novels and non-fiction books (often examining issues of sex and gender), and numerous other publications, including grimoires. Her debut novel, The Enchantments of Flesh and Spirit, was a finalists for the Lambda Literary Award for Science Fiction, Fantasy and Horror. Subsequent work was nominated for the British Science Fiction Award, the British Fantasy Award, the Locus Award and the Otherwise Award.
In addition to her work as a writer, Constantine headed Immanion Press, an independent publishing company she founded in 2003 to publish both her own back catalogue and works of other niche fiction and non-fiction writers.