Sumter Airport (IATA: SUM, ICAO: KSMS, FAA LID: SMS) is a public use airport located four nautical miles (7 km) north of the central business district of Sumter, a city in Sumter County, South Carolina, United States. The airport is owned and operated by the Sumter County under an Airport Commission structure and has a county appointed airport manager, Jeff Knauer.

Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned SMS by the FAA and SUM by the IATA (which assigned SMS to Sainte Marie Airport in Sainte-Marie, Madagascar).