George Ewing Martin (November 23, 1857 – April 14, 1948) was a United States federal judge.
Born in Lancaster, Ohio, Martin attended the University of Heidelberg and received an A.B. from Wittenberg College in 1877. He read law to enter the bar in 1883, and was in private practice in Lancaster, Ohio from 1883 to 1904. He was a Common pleas judge, 7th Judicial District of Ohio from 1904 to 1911. He was an Associate Judge, U.S. Court of Customs Appeals from 1911 to 1923, and was Presiding Judge of that court from 1923 to 1924.
On May 16, 1924, Martin was nominated by President Calvin Coolidge to the position of Chief Justice of the United States Court of Appeals for the District of Columbia Circuit, vacated by Constantine J. Smyth. Martin was confirmed by the United States Senate on May 22, 1924, and received his commission the same day. He assumed senior status on September 30, 1937, serving in that capacity until his death.