List of Ramsar sites in Japan

The Ramsar Convention on Wetlands of International Importance Especially as Waterfowl Habitat is an international treaty for the conservation and sustainable use of wetlands. Adopted in 1971, it entered into force in 1975 and as of April 2022 had 172 contracting parties. Japan was the twenty-fourth party to accede, on 17 October 1980. Kushiro-shitsugen was the first of Japan's fifty-three Ramsar sites as of April 2022, with a total surface area of 1552 sqkm.