James D. Macdonald (1954- ) is an American author and critic who lives in New Hampshire with his wife and frequent collaborator, Dr. Debra Doyle. He works in several genres, concentrating on fantasy, but also writing science fiction, and mystery and media tie-ins. Macdonald was born in 1954, and raised in White Plains, New York. He attended the University of Rochester, and went on to serve in the US Navy for fifteen years. He has been writing professionally since the early 1990s and has published 35 novels.