Charles D. Hamel (c. 1882 – June 5, 1970) was a judge of the United States Board of Tax Appeals (later the United States Tax Court) from 1924 to 1925. An attorney from Grafton, North Dakota, Hamel was clerk to the United States Senate Committee on Agriculture and Forestry in 1900 and 1907. From April 1909 to October 1915, he was employed in legal work in the United States Department of the Interior, and in October 1915 was transferred to the United States Department of Justice. In October 1917, he was appointed special assistant to the Attorney-General, serving in that capacity until December 31, 1921. In February 1922, he entered the office of the Solicitor, United States Bureau of Internal Revenue. For several months beginning in November 1923, he was chairman of the special committee on