Mangum Mound Site, Native American archaeological site along Natchez Trace Parkway, Mississippi, United States.

Mangum Mound Site is a Plaquemine culture burial mound at milepost 45.7 on the Natchez Trace Parkway in Claiborne County, Mississippi. The mound is an earthen structure, not a built-over natural hill, and was used for burials during the Foster Phase (1350–1500 CE). Excavations found extended and bundled burials and two rare repoussé copper plates with avian designs.

Mangum Mound Site is a Plaquemine culture burial mound used during the Foster Phase, roughly 1350 to 1500 CE, and apparently abandoned before Hernando de Soto's 1540 expedition. The owner Spurgeon C. Mangum first dug into it in 1936, and test excavations followed in April 1951 under the Natchez Trace Park Survey. Charles F. Bohannon excavated for the National Park Service in 1963, recording eighty-four individuals, more than half of them bundled burials.

The site contained two rare Mississippian copper plates with bird designs representing the ceremonial practices of the Plaquemine culture.

The site lies at milepost 45.7 on the Natchez Trace Parkway in Claiborne County, Mississippi, and is reached from the parkway itself. The mound stands in woodland beside the road, so look for the milepost marker to locate it. Ground can be uneven and overgrown; sturdy shoes help.

Grave goods including rare copper plates with bird designs were discovered at this location. These objects provide insight into the ceremonial practices and artistic skills of those who lived here.