Joseph Randolph Cockerill (January 2, 1818 – October 23, 1875) was a 19th Century American lawyer and politician who served as a U.S. Representative from Ohio for one term from 1857 to 1859.

Cockerill entered the Union Army during the American Civil War and served as colonel of the 70th Ohio Infantry, December 20, 1861.

[1] Except for the periods between August 21, 1863, and September 19, 1863, and January 28, 1864, and March 11, 1864, he exercised brigade command in the Army of the Tennessee from October 26, 1862, to April 13, 1864.

[2] After the Civil War, Joseph Cockerill was again a member of the Ohio house of representatives, serving from 1868 to 1871.

[1] This article incorporates public domain material from the Biographical Directory of the United States Congress