Robert Rutherford "Colonel" McCormick was an American lawyer, businessman and anti-war activist.

Robert Hall McCormick was an American inventor who invented numerous devices including a version of the reaper which his eldest son Cyrus McCormick patented in 1834 and became the foundation of the International Harvester Company. Although he lived his life in rural Virginia, he was patriarch of the McCormick family that became influential throughout the world, especially in large cities such as Chicago, Washington, D.C., and New York City.