The Science Fiction and Fantasy Writers of America, doing business as Science Fiction and Fantasy Writers Association, commonly known as SFWA is a nonprofit 501(c)(3) organization of professional science fiction and fantasy writers. While SFWA is based in the United States, its membership is open to writers worldwide. The organization was founded in 1965 by Damon Knight under the name Science Fiction Writers of America. The president of SFWA as of July 1, 2021 is Jeffe Kennedy.

Damon Francis Knight was an American science fiction author, editor, and critic. He is the author of "To Serve Man", a 1950 short story adapted for The Twilight Zone. He was married to fellow writer Kate Wilhelm.