The 5th Illinois Cavalry Regiment was a cavalry regiment that served in the Union Army during the American Civil War.

The 5th Illinois Volunteer Cavalry was mustered into service at Camp Butler, Illinois, on August 31, 1861.

The regiment was mustered out on October 27, 1865.

The regiment suffered 28 enlisted men who were killed in action or who died of their wounds and 5 officers and 414 enlisted men who died of disease, for a total of 447 fatalities.

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