Marionville is a city in Lawrence County, Missouri, United States. The population was 2,113 at the 2000 census. On March 12, 2006, a tornado hit the town, destroying houses and killing two people. It was rated as an F3.
Marionville is located at 37°0′1″N 93°38′17″W / 37.00028°N 93.63806°W / 37.00028; -93.63806 (37.000361, -93.638026).
According to the United States Census Bureau, the city has a total area of 1.4 square miles (3.6 km²), all of it land.