Thomas Reade Rootes Cobb (April 10, 1823 – December 13, 1862) was an American lawyer, author, politician, and Confederate officer, killed in the Battle of Fredericksburg during the American Civil War.
Cobb graduated in 1841 from Franklin College (now the University of Georgia), where he was a member of the Phi Kappa Literary Society, and was admitted to the bar in 1842. From 1849 to 1857, he was a reporter of the Supreme Court of Georgia. He was an ardent secessionist, and was a delegate to the Secession Convention. He is best known for his treatise in support of slavery titled An Inquiry into the Law of Negro Slavery in the United States of America (1858) and as one of the founders of the University of Georgia School of Law.
He organized Cobb's Legion in the late summer of 1861 and was commissioned a colonel in the Confederate army on August 28, 1861. The Legion was assigned to the Army of Northern Virginia. It took heavy losses during the Maryland Campaign. He was promoted to brigadier general on November 1, 1862, but this promotion was not confirmed by the Confederate Congress. At the Battle of Fredericksburg, he was mortally wounded in the thigh by a Union artillery shell that burst inside the Stephens house near the Sunken Road on Marye's Heights. He bled to death from damage to the femoral artery on December 13, 1862. Some later accounts by veterans claim that the wounding was by rifle fire and that a Confederate soldier may have been responsible. He is buried at Oconee Hill Cemetery in Athens, Georgia.