Alexander C. Irvine is an American fantasist and science fiction writer. He also writes under the pseudonym Alex Irvine. He first gained attention with his novel A Scattering of Jades and the stories that would form the collection Unintended Consequences. He has also published the Grail quest novel One King, One Soldier, and the World War II-era historical fantasy The Narrows.

In addition to his original works, Irvine has published Have Robot, Will Travel, a novel set in Isaac Asimov's positronic robot milieu; and Batman: Inferno, about the DC Comics superhero.

His academic background includes an M.A. in English from the University of Maine and a PhD from the University of Denver. He is an assistant professor of English at the University of Maine. He also worked for a time as a reporter at the Portland Phoenix.