George Washington Cook (November 10, 1851 – December 18, 1916) was a U.S. Representative from Colorado. At eleven years of age, he ran away from home to serve during the Civil War. He was a drummer boy and then a chief regimental clerk. After the war, he completed his public school education and then attended Indiana University. His varied career included working for railroad and mining companies, and service as a mayor and a legislator. He was department commander for the Grand Army of the Republic.