Major John Beach (January 1, 1812 – August 31, 1874) was a United States Army officer during the Black Hawk and American Civil War.
He was the last U.S.
Indian Agent to the Sac and Fox tribes.
A son-in-law to General Joseph Street, Beach succeeded him as agent to the Sac and Fox upon Street's death, and he eventually hosted the week-long council that resulted in the signing of the treaty for the purchase of much of Iowa from the Sac and Fox Indians in October 1842.