Juanita Coulson (born February 12, 1933) is an American science fiction and fantasy writer, active fan and fanzine editor. She is also widely known in filk music circles since the 1950s for her singing and songwriting; she has been nominated for severalPegasus Awards for her filking. For thirty-three years, she co-edited the science fiction fanzine Yandro with her husband "Buck" (Robert Coulson). Yandro was nominated for a Hugo Award every year from 1958—1967; it won the award in 1965, thus making Coulson one of the very first women editors to be so honored.

Her first novel, Crisis on Cheiron, came out in 1967. During her writing career, she has collaborated with other authors such as Marion Zimmer Bradley. One of her better-known novel series is the Children of the Stars books. Several of her novels concern the exploitation of "primitive" intelligent species or First contact.

Coulson is the fan guest of honor for the 2010 NASFiC, ReConStruction.

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