Damon George Tunnicliff (August 20, 1829 – December 20, 1901) was an American jurist.

At age fifteen, he went to live with his uncle in Cleveland, and in 1849, he moved to Vermont, Illinois to run a store for his cousin.

[1] After successfully acting as his own attorney in trials for two traffic offenses there, he read law at a firm in Rushville, and was admitted to the bar in April 1853.

He began practicing law in Macomb, Illinois in 1854, and later that year he became an attorney for the Northern Cross Railroad.

[1] From February to June 1885, Tunnicliff served as a justice on the Supreme Court of Illinois.