Alexander Brian Rossino (born 1966) is an American historian and writer specializing in World War II in Poland and the American Civil War. Rossino is the author of Hitler Strikes Poland: Blitzkrieg, Ideology, and Atrocity (2003) and a novel, Six Days in September: A Novel of Lee's Army in Maryland, 1862 (2017). With Gene M. Thorp, he is the co-author of The Tale Untwisted: George McClellan and the Discovery of Lee's Lost Orders, September 13, 1862 (2019).