Battery A, 1st Illinois Light Artillery Regiment, originally known as "Smith's Chicago Light Artillery," was an artillery battery that served in the Union Army during the American Civil War.

Battery A was mustered into service at Chicago, Illinois on April 17, 1861 for three months state service.

The battery was mustered out on July 3, 1865.

[1] The battery lost 15 enlisted men who were killed in action or who died of their wounds and 22 enlisted men who died of disease, for a total of 37 fatalities.

This article about a specific military unit of the American Civil War is a stub.