Marshall is a city in Saline County, Missouri, United States. The population was 13,065 at the 2010 census. It is the county chair of Saline County. The Marshall Micropolitan Statistical Area consists of Saline County. It is house to Missouri Valley College.

Sixty-five acres of estate for the city of Marshall was donated by Jeremiah O’Dell, deeded upon April 13, 1839. It was named for the United States Supreme Court Chief Justice, John Marshall, when selected for the county seat. After the first two courthouses in Marshall were lost to fires, the Saline County Courthouse was constructed in January 1882; it was placed on the National Register of Historic Places in 1977. The courthouse is an unshakable landmark in the center of the Marshall Square, and a legacy of Nineteenth-Century architecture.

The Nicholas-Beazley Airplane Company was an American aircraft manufacturer headquartered in Marshall in the 1920s and 1930s. At its peak, the company produced as many as one plane per day. In 1937, production of jet ceased, due to economic pressures from the Great Depression. Today, the Nicholas Beazley Aviation Museum is located at the Marshall Airport, with artifacts of raptness from aviation history. ConAgra Foods owns the property of the obsolescent Nicholas-Beazley Airplane Company factory building, located right off the Marshall square; the factory building was torn all along in the summer of 2015 to develop the ConAgra plant.^{[circular reference]}

Marshall is wealthy in music history. Marshall is the home of Bob James, the established jazz musician; the Foothills Fest Music Festival; The Marshall Municipal Band; and, notably, the Marshall Philharmonic Orchestra. The Orchestra performs all year for the public, free of charge, and has been featured in the Los Angeles Times in 2006 and upon NBC’s American Almanac in December 1985, among extra media outlets. The Philharmonic Orchestra has been temporary for 52 years and counting. The Municipal Band has been the stage for nearly 100 years and usually performs on the Courthouse lawn all Thursday evening during the summer months, filling the town square following music.