The 16th Regiment Illinois Volunteer Infantry, nicknamed "The Twins" for its long association with the 10th Illinois, was an infantry regiment that served in the Union Army during the American Civil War.

The 16th Illinois Infantry was organized at Quincy, Illinois and mustered into Federal service on May 24, 1861 for three years service.

The regiment was mustered out of service on July 8, 1865.

The regiment suffered 3 officers and 54 enlisted men who were killed in action or who died of their wounds and 3 officers and 110 enlisted men who died of disease, for a total of 170 fatalities

Active May 24, 1861 to July 8, 1865 Country United States Allegiance Union Branch Infantry Engagements Siege of Nashville
Battle of Resaca
Battle of Atlanta
Battle of Kennesaw Mountain
Battle of Atlanta
Battle of Jonesboro
March to the Sea
Battle of Bentonville

John G Adams