Port Townsend Aero Museum, Aviation museum at Jefferson County International Airport in Port Townsend, Washington.

The Port Townsend Aero Museum displays a collection of historical aircraft in a modern building located at the local airport. The exhibits range from small general aviation planes to helicopters and show how aircraft design and technology developed over time.

The museum was founded in 2001 by Jerry and Peggy Thoutte as a small collection of flyable aircraft. A move to a new building in 2008 allowed the collection to grow significantly and improved how the aircraft could be displayed.

The museum keeps its aircraft flyable, and the Thouttes founded it in 2001 with six such planes. A PT-17 Stearman belonging to the museum made an emergency landing on a Discovery Bay beach on 28 April 2019 after engine failure; the airframe was badly damaged but the pilot and passenger suffered only minor injuries.

The museum is located on the airport grounds and operates on specific weekdays with seasonal hour variations. It helps to check opening times in advance and allow enough time to walk through all the aircraft displays at a relaxed pace.

The museum's PT-17 Stearman biplane made an emergency landing on a beach at Discovery Bay on April 28, 2019, after an in-flight engine failure. The narrow, sloping beach damaged the airframe heavily, but the pilot and passenger suffered only minor injuries.