John Hobart Marble (February 26, 1869[1] – November 21, 1913) was an American attorney and government official, who was appointed to the Interstate Commerce Commission in March 1913 and served on the commission until his death eight months later.

In 1913, Lane, by now chairman of the Commission as well as a commissioner, was appointed as Secretary of the Interior by President Woodrow Wilson.

Wilson subsequently appointed Marble to the Commission in Lane's place, with Edgar Erastus Clark becoming chairman.

[4] On November 20, 1913, Marble, the junior commissioner both in age and in time on the Commission, was conducting an ICC hearing in Philadelphia, when he was taken ill[3] with an attack of acute indigestion[4] Marble journeyed to his Washington home.

[4] At a hearing on November 24, Chairman Clark described Marble as "a man of genial, helpful and splendid personality, indefatigable industry, sterling integrity, and broad fair-mindedness.