The 2nd Illinois Cavalry Regiment was a cavalry regiment that served in the Union Army during the American Civil War.

Companies "A" to "L of the 2nd Illinois Cavalry was mustered into service at Camp Butler, Illinois, on August 12, 1861.

Company "M"" was mustered in on December 30, 1861.

The regiment suffered 8 officers and 50 enlisted men who were killed in action or who died of their wounds and 3 officers and 173 enlisted men who died of disease, for a total of 234 fatalities.

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