The 9th Missouri Infantry Regiment was an infantry regiment of the Confederate States Army in the American Civil War. 9th Missouri Infantry Regiment may also refer to: * 12th Missouri Infantry Regiment (Confederate), a Confederate States Army unit also known as the 9th Missouri Infantry Regiment for a short period * 59th Illinois Infantry Regiment, a Union unit in the American Civil War originally known as the 9th Missouri Infantry Regiment This disambiguation page lists articles about military units and formations which are associated with the same title. If an internal link referred you to this page, you may wish to change the link to point directly to the intended article.