Harold Theodore "Theo" Tate (December 28, 1875 - October 23, 1960) was the 26th Treasurer of the United States from May 31, 1928 until January 17, 1929, serving under President Calvin Coolidge. While holding that post, his duties included being the signatory on United States currency. Managing money seems to have run in this family. H. T. Tate's brother Ernest served as Treasurer of the Southern Railway, headquartered at 15th and K Street N.W. in Washington, D.C., just a few blocks away from the United States Department of the Treasury.