South Naknek Airport (IATA: WSN, ICAO: PFWS, FAA LID: WSN), also known as South Naknek Nr 2 Airport, is a state-owned public-use airport located one nautical mile (1.85 km) southwest of the central business district of South Naknek, in the Bristol Bay Borough of the U.S. state of Alaska.

As per Federal Aviation Administration records, this airport had 330 commercial passenger boardings (enplanements) in calendar year 2008, a decrease of 19% from the 409 enplanements in 2007. South Naknek Airport is included in the FAA's National Plan of Integrated Airport Systems (2009-2013), which categorizes it as a general aviation facility.