Rodolfo "Rudy" Francisco Acuña, Ph.D., (born May 18, 1932) is an American historian, professor emeritus at California State University, Northridge, and a scholar of Chicano studies. He authored the 1972 book Occupied America: A History of Chicanos, approaching history of the Southwestern United States with a heavy emphasis on Mexican Americans. An eighth edition was published in 2014. Acuña has also written for the Los Angeles Times, The Los Angeles Herald-Express, La Opinión, and numerous other newspapers. His work emphasizes the struggles of Mexican American people. Acuña is an activist and he has supported numerous causes of the Chicano Movement. He currently teaches an on-line history course at California State University, Northridge.