Amook Bay Seaplane Base (IATA: AOS, FAA LID: AK81) is a privately owned seaplane base located in Amook Bay, a community in the Kodiak Island Borough of the U.S. state of Alaska.

Although classified by the FAA as "private use", Amook Bay has scheduled passenger service to Kodiak, Alaska, which is subsidized by the United States Department of Transportation via the Essential Air Service program.