The 3rd Missouri Infantry Regiment may refer to: *

3rd Missouri Infantry Regiment (Confederate) The 3rd Missouri Infantry Regiment served in the Confederate States Army during the American Civil War. The infantry regiment was officially mustered into service on January 17, 1862. It fought at the Battle of Pea Ridge in Arkansas in March b ...

, Confederate regiment during the American Civil War * 3rd Missouri Infantry Regiment (Union), Union regiment during the American Civil War * 3rd Missouri Colored Infantry Regiment, Union regiment during the American Civil War * 3rd Missouri US Reserve Corps Infantry Regiment, Union regiment during the American Civil War

See also