Arthur St. Clair Colyar (June 23, 1818 – December 13, 1907) was an American lawyer, Confederate politician, and newspaper editor.

[2] During the American Civil War, Colyar represented the state in the Second Confederate Congress from 1864 to 1865.

[1] After the war, Colyar resumed his legal practise in Winchester, but he moved to Nashville, Tennessee in 1867.

[2] He was a creditor and later president of the Tennessee Coal and Iron Company, which used mainly African-American leased convict labor to produce steel.

[2][3] He served as a member of the Tennessee House of Representatives in the 1870s,[2] and unsuccessfully ran for Governor three times.