Belmont is an extinct town in Mississippi County, in the U.S. state of Missouri. The GNIS classifies it as a populated place under the name "Belmont Landing".
Belmont was platted in 1853, and named after August Belmont, a businessman interested in the site. A post office called Belmont Landing was in operation from 1867 until 1866, and a post office called Belmont from 1869 until 1923. A series of floods (1912, 1922, and 1937) inundated the town, causing its population to dwindle.
Belmont was the scene of a Civil War battle, the Battle of Belmont in 1861. The community lends its name to the Columbus-Belmont State Park, a Civil War site across the Mississippi River in Kentucky.
Coordinates: 36°45′59″N 89°07′18″W / 36.7664457°N 89.1217338°W