LeRoy Pope Walker (February 7, 1817 – August 23, 1884) was the first Confederate States Secretary of War.

He held various offices in Alabama; in 1853, he resigned his position as a circuit court judge in order to focus on his legal practice.

Walker was chosen as the commissioner from Alabama to the Tennessee Secession Convention, where he publicly read Alabama's Articles of Secession and tried to persuade Tennessee politicians to vote to do likewise.

In April 1861, shortly after the Civil War began with the bombardment of Fort Sumter by rebel forces, Walker predicted that Washington, D.C., and Boston would fall to the Confederacy before May 1 of that year.

After the war, Walker returned to his legal practice and continued to be interested in politics.