Julián Casanova Ruiz (born 1956 in Valdealgorfa) is a Spanish historian. He teaches contemporary history at University of Zaragoza, and has been a visiting professor in US, UK and Latin America universities as well as a recurring visiting professor at Hungary's Central European University. He's a columnist for El País and frequent talk show guest at radio station Onda Cero. In 2008 he was nominated among the experts in the first judicial investigation (conducted by judge Baltasar Garzón) against the Francoism crimes.