| 59th Illinois Infantry Regiment | |
|---|---|
 Illinois state flag | |
| Active | September 18, 1861, to December 8, 1865 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Engagements | Battle of Pea Ridge Battle of Perryville Battle of Stone's River Battle of Lookout Mountain Battle of Resaca Battle of Kennesaw Mountain Siege of Atlanta Battle of Jonesboro Battle of Franklin Battle of Nashville |
The 59th Illinois Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. It was formed as the 9th Missouri Infantry Regiment in September 1861, and changed name to the 59th Illinois Infantry Regiment in February 1862.