John Murray Hoag (May 5, 1843 – December 12, 1917) was a Union Army officer and Freedmen's Bureau official in Georgia during the Reconstruction Era. After leaving the Army, he was a prolific breeder of Shetland ponies in Iowa. Later in life he returned to the Army as a recruiter in New York.
His correspondence with Hettie Sabattie, a school teacher of African American children, was analyzed in the Georgia Historical Quarterly to better understand Reconstruction-era events in Georgia.[2]