Robert Mitchell (1788–1848) was a member of the United States House of Representatives from Ohio. Mitchell was born in Westmoreland County, Pennsylvania. He studied medicine before he moved to Ohio in 1807. Mitchell practiced medicine in Zanesville, Ohio and later held various positions in Muskingum County. He served in the War of 1812 in John De Vault's company. From 1815 to 1817 Mitchell was a member of the Ohio House of Representatives. He then served as a judge of the court of common pleas. In 1822 he held the rank of Brigadier General in the Ohio Militia.