John Coburn (October 27, 1825 – January 28, 1908) was a United States Representative from Indiana and an officer in the Union Army during the American Civil War.

He served as a judge of the Court of Common Pleas from 1859 to 1861, when he resigned to enter the Union Army following the outbreak of the American Civil War.

He promoted the building of the Soldiers' and Sailors' Orphanage in Knightstown, Indiana, and he helped secure the use of land in Indianapolis for Garfield Park.

His later years were spent living in the Bates-Hendricks House at 1526 S. New Jersey Street in Indianapolis with his wife Caroline (Test) Coburn until his death in 1908.

After leaving Congress, he was appointed a justice of the Supreme Court of the Territory of Montana on February 19, 1884, and served until December 1885.