The president of the Confederacy during the Battle of Antietam was Jefferson Davis.

Serving from 1861 to 1865, Davis was a former U.S. senator and secretary of war who became the first and only president of the Confederate States of America. His leadership during the Civil War faced numerous challenges, including military setbacks and resource shortages. At the time of the Battle of Antietam, fought on September 17, 1862, Davis was keenly focused on maintaining support for the Confederate cause and coordinating military strategies with generals like Robert E. Lee, who commanded the Army of Northern Virginia.