Wyman Woods Guin (pseudonym: Norman Menasco) (March 1, 1915 – February 19, 1989) was a pharmacologist and advertising executive best known for writing science fiction.
Born in Wanette, Oklahoma, he started publishing during 1950, and gained attention the next year with his novella Beyond Bedlam in Galaxy Science Fiction. He is known best as a short story writer and was associated strongly with Galaxy. He produced only one novel, The Standing Joy.
In 2013, Guin was named as recipient for the Cordwainer Smith Rediscovery Award at ReaderCon 24.