Harry Turtledove was born in Los Angeles in 1949. After flunking out of Caltech, he earned a Ph.D. in Byzantine history from UCLA. He has taught ancient and medieval history at UCLA, Cal State Fullerton, and Cal State L.A., and he has published a translation of a ninth-century Byzantine chronicle, as well as several scholarly articles. He is also a Hugo Award-winning and critically acclaimed full-time writer of science fiction and fantasy. His alternate history works have included several short stories and the novels A World of Difference, The Guns of the South (a speculative novel of the Civil War), and the Worldwar tetralogy that began in 1994 with Worldwar: In the Balance. He is currently working on his next project: an alternate history series about the Great War.
He is married to fellow novelist Laura Frankos. They have three daughters: Alison, Rachel, and Rebecca.