Battery "B", 2nd Illinois Light Artillery Regiment was an artillery battery from Illinois that served in the Union Army during the American Civil War. The battery was organized in June 1861. It fought at Shiloh, First Corinth, and Second Corinth in 1862. Subsequently, the unit garrisoned Corinth, Mississippi until January 1864. It was stationed at Memphis, Tennessee until June 1864 when it fought at Brices Cross Roads. The battery garrisoned Memphis until it was mustered out in July 1865.