The 37th Regiment Illinois Volunteer Infantry, nicknamed the "Fremont Rifles" and "Illinois Greyhounds", was an infantry regiment that served in the Union Army during the American Civil War.

[1] The 37th Illinois Infantry was organized at Chicago, Illinois, and mustered into Federal service on September 18, 1861.

The Regiment suffered casualties of the 54 members of Company A: 5 killed, 4 mortally wounded and 24 wounded.

The regiment suffered 7 officers and 91 enlisted men who were killed in action or who died of their wounds and 5 officers and 164 enlisted men who died of disease, for a total of 267 fatalities.

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