The 3rd Iowa Cavalry Regiment was a cavalry regiment that served in the Union Army during the American Civil War.

The regiment was mustered out of Federal service on August 9, 1865.

A total of 2,165 men served in the 3rd Iowa at one time or another during its existence.

[1] It suffered 5 officers and 79 enlisted men who were killed in action or who died of their wounds and 4 officers and 230 enlisted men who died of disease, for a total of 318 fatalities.

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