Debra Doyle (November 30, 1952 – October 31, 2020) was an American author. Many of her works were science fiction, fantasy, and mystery, for young adults. Her works were co-written with her husband, James D. Macdonald. Their novel "Knight's Wyrd" was awarded the Mythopoeic Fantasy Award for Children's Literature in 1992 and appeared on the New York Public Library Books for the Teen Age list in 1993. 