Williamsburg Regional Airport (IATA: None, ICAO: KCKI, FAA LID: CKI) is a county-owned public-use airport located three nautical miles (3 mi, 5 km) west of the central business district of Kingstree, in Williamsburg County, South Carolina, United States.

The airport is included in the FAA's National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a general aviation facility. It has no scheduled commercial service.

Williamsburg Regional covers an area of 396 acres (160 ha) at an elevation of 67 feet (20 m) above mean sea level. It has one runway designated 14/32 with an asphalt surface measuring 5,000 x 75 feet (1,524 x 23 m). Runway 14 is equipped with a NDB approach. Runway 36 is equipped for RNAV approaches. The magnetic variation from 2015 is 6 degrees West.

For the 12-month period ending June 14, 2012, the airport had 6,440 aircraft operations, on average 115 per week: 99% general aviation and 1% military. At that time there were 12 aircraft based at this airport: 7 single-engine, 3 multi-engine, and 2 ultralight.

• List of airports in South Carolina

• Airport official website
• Aerial photo as of January 1994 from USGS The National Map
• FAA Terminal Procedures for CKI, effective October 31, 2024
• Resources for this airport:
  • FAA airport information for CKI
  • AirNav airport information for KCKI
  • ASN accident history for CKI
  • FlightAware airport information and live flight tracker
  • NOAA/NWS weather observations: current, past three days
  • SkyVector aeronautical chart, Terminal Procedures