Sequim Valley Airport (IATA: SQV, FAA LID: W28) is a privately owned, public use airport located four nautical miles (5 mi, 7 km) northwest of the central business district of Sequim, a city in Clallam County, Washington, United States.

During 2022, a website named Barnstormers.com listed the airport as "being for sale" with an asking price of $4,750,000 US dollars.

Sequim Valley Airport covers an area of 150 acres (61 ha) at an elevation of 151 feet (46 m) above mean sea level. It has one runways: 9/27 is 3,508 by 40 feet (1,069 x 12 m) with an asphalt surface.

For the 12-month period ending December 31, 2022, the airport had 8,310 aircraft operations, an average of 23 per day, 98% general aviation, <1% air taxi, and <1% military. At that time there were 30 aircraft based at this airport: 28 single-engine, 1 multi-engine, and 1 ultra-light.

• List of airports in Washington

• Sequim Valley Airport (W28) at WSDOT Airport Directory
• Aerial image as of June 1994 from USGS The National Map
• Resources for this airport:
  • FAA airport information for W28
  • AirNav airport information for W28
  • FlightAware airport information and live flight tracker
  • SkyVector aeronautical chart for W28