Waterfall Seaplane Base (IATA: KWF, FAA LID: KWF) is a public-use seaplane base located in Waterfall on Prince of Wales Island in the Prince of Wales-Hyder Census Area of the U.S. state of Alaska. It is owned by the Waterfall Cannery Resort.

As per Federal Aviation Administration records, Waterfall SPB had 2,072 passenger boardings (enplanements) in calendar year 2008, a decrease of 7% from the 2,237 enplanements in 2007.