The Battle of Crooked River was a skirmish between Latter Day Saints forces and a Missouri state militia unit from southeast of Elmira, Missouri in Ray County under the command of Samuel Bogart. One of the principal points of conflict in the 1838 Missouri Mormon War, the battle resulted in the issuance of Missouri Executive Order 44, sometimes called the "Extermination Order" and ultimately the expulsion of the Mormons from Missouri.