Battery B, 1st Illinois Light Artillery Regiment was an artillery battery that served in the Union Army during the American Civil War.

The battery was re-mustered for three years service at Cairo, Illinois on July 16, 1861.

Veterans and recruits were transferred to Battery A, 1st Illinois Light Artillery Regiment.

[1] The battery suffered 9 enlisted men who were killed in action or who died of their wounds and 1 officer and 17 enlisted men who died of disease, for a total of 27 fatalities.

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