Charles Scott Venable (March 19, 1827 – August 11, 1900) was a mathematician, astronomer, and military officer. In mathematics, he is noted for authoring a series of publications as a University of Virginia professor.
On January 20, 1864, Major Venable, along with his fellow staff officers, watched Andries Rhoodie's demonstration of a new rifle for General Lee. He assisted in placing human cut-out targets in a firing range out to 500 yards. After the demonstration, he helped collect them.
During the demonstration, General Lee asked Venable to time Rhoodie's shooting. Venable signaled Rhoodie when to begin and reported 30 shots in 32 seconds, a remarkable achievement.