San Juan (Uganik) Seaplane Base (IATA: UGI, FAA LID: WSJ[3]) is a public use seaplane base located in San Juan (Uganik), in the Kodiak Island Borough of the U.S. state of Alaska.

[2] It is privately owned by the San Juan Fishing & Packing Co.[2] Scheduled passenger service to Kodiak, Alaska, is subsidized by the United States Department of Transportation via the Essential Air Service program.

This facility has one seaplane landing area designated N/S with a water surface measuring 10,000 by 2,000 feet (3,048 x 610 m).

[2] The following airline offers scheduled passenger service: