The 19th Wisconsin Infantry Regiment was a volunteer infantry regiment that served in the Union Army during the American Civil War.

The 19th Wisconsin was organized at Madison, Wisconsin, and mustered into Federal service April 30, 1862.

The regiment was mustered out on August 9, 1865, at Richmond, Virginia.

The 19th Wisconsin suffered 2 officers and 41 enlisted men killed in action or who later died of their wounds, plus another 3 officers and 115 enlisted men who died of disease, for a total of 161 fatalities.

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