Angoon Seaplane Base (IATA: AGN, ICAO: PAGN, FAA LID: AGN) is a state-owned public-use seaplane base located one nautical mile (2 km) southeast of the central business district of Angoon, a city on Admiralty Island in the Hoonah-Angoon Census Area of the U.S. state of Alaska. Scheduled airline service is subsidized by the Essential Air Service program.

As per the Federal Aviation Administration, this airport had 1,770 passenger enplanements (boardings) in calendar year 2008, 1,750 in 2009, and 1,680 in 2010. The National Plan of Integrated Airport Systems for 2015–2019 categorized it as a general aviation airport, based on 1,743 enplanements in 2012 (the commercial service category requires at least 2,500 enplanements per year).