| Unit Name: | 14th Regiment Illinois Volunteer Infantry (3 Year) |
| Dates: | May 25, 1861 - September 18, 1865 |
| Country: |  United States |
| Allegiance: | Union |
| Branch: | United States Army Union Army |
| Type: | Infantry |
| Battles: | Battle of Shiloh Battle of Hatchie's Bridge Siege of Vicksburg Battle of Bentonville |
| Notable Commanders: | Col. John M. Palmer |
The 14th Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 14th Illinois Infantry was mustered into Federal service for a three-year enlistment on May 25, 1861, at Jacksonville, Illinois.
The regiment was consolidated with 15th Illinois Infantry on July 1, 1864, as the 14th and 15th Battalion Illinois Volunteer Infantry but reorganized as the 14th Illinois on April 28, 1865.
The regiment was mustered out on September 18, 1865, at Fort Leavenworth, Kansas.
The regiment suffered 62 enlisted soldiers killed in action or mortally wounded and 1 officer and 160 enlisted who died of disease, for a total of 223 fatalities.[1]