Burnside is an unincorporated community located in Neshoba County, Mississippi, United States. Burnside is approximately 5.6 miles (9.0 km) north of Philadelphia along Mississippi Highway 15.

Burnside is located on the former Gulf, Mobile and Ohio Railroad and was once home to four general stores, a grocery store and two sawmills. The J. M. Griffin Lumber Company, based in Wilmington, Delaware, formerly operated a large mill in Burnside that consisted of a sawmill, planing mill, dry kilns, power plant and 23 miles of railroad. A mill town was also constructed that was home to a school and churches.

The Philadelphia Neshoba County Park Commission operates Burnside Park in Burnside. The park has an auditorium, picnic pavilions, a suspension bridge, and fishing lake.

From 1905 to 1951, a post office operated in Burnside. Three postmasters served the community during that time.

#	Postmaster	Term	Notes
1	Elizabeth Burnside	August 7, 1905 - January 31, 1940
2	Tom Ben Fryery	January 31, 1940 - October 28, 1940
3	Mrs. Vera Gordon	October 28, 1940 - September 7, 1951	After the post office ceased operation, the community was served by the post office at Philadelphia.