Catherine Lucille Moore (January 24, 1911 – April 4, 1987) was an American science fiction and fantasy writer, most often as C. L. Moore. She was amongst the first women to write in either genre (though earlier woman writers in these genres include Sophie Wenzel Ellis, Clare Winger Harris, Greye La Spina, Lilith Lorraine. Francis F. Stevens, Leslie F. Stone and Everil Worrell). Moore's work paved the way for many other female speculative fiction writers. She and her first husband Henry Kuttner were prolific co-authors under their own names and three pseudonyms.