South Lewis County Airport (IATA: TDO, ICAO: KTDO, FAA LID: TDO), also known as Ed Carlson Memorial Field, is a county-owned public-use airport in Lewis County, Washington, United States. It is located three nautical miles (4 mi, 6 km) north of the central business district of Toledo, Washington.

This airport is included in the FAA's National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a general aviation facility.