James Daniel Lowder (born 1963) is an American author and editor, working most often within the fantasy, dark fantasy, and horror genres.
James Lowder's earliest novels were part of the Forgotten Realms and Ravenloft shared universe book lines, but beginning in the late 1990s he turned his attention more often to creator-owned projects. Some of his short stories have been cited in the honorable mention list of the annual Year's Best Fantasy and Horror. He was an Origins Award finalist in the Best Short Fiction category for his 2003 novella, "The Night Chicago Died", a story that featured the debut of his mystery man character, The Corpse. His novels have been translated into more than ten languages.