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

Private James H. Robinson of Company B would later be awarded the Medal of Honor for his bravery at a fight at Brownsville, Arkansas, on January 27, 1864.

The regiment was mustered out of service on March 15, 1866.

The regiment suffered 3 officers and 27 enlisted men killed in action or mortally wounded and 4 officers and 380 enlisted men who died of disease, for a total of 414 fatalities.

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