The 13th Wisconsin Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.

The 13th Wisconsin was raised at Janesville, Wisconsin, and mustered into federal service October 17, 1861.

The regiment was mustered out on November 24, 1865, at San Antonio, Texas.

The 13th Wisconsin suffered 5 enlisted men killed in action or who later died of their wounds, plus another 188 enlisted men who died of disease, for a total of 193 fatalities.

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