Under UNESCO's Man and the Biosphere Programme, there are 329 biosphere reserves recognized as part of the World Network of Biosphere Reserves in Europe and North America (as of September 2025). These are distributed across 43 countries in the region.
Biosphere reserves operating under the UNESCO Man and the Biosphere Programme aim to achieve three mandate management objectives of conservation, sustainable socio-economic development, and logistic support.
Below is the list of biosphere reserves in Europe and North America, organized by country/territory, along with the year these were designated as part of the World Network of Biosphere Reserves.
The list does not include the Intercontinental Biosphere Reserve of the Mediterranean, a biosphere reserve shared between Morocco and Spain, which has been classified as part of the Arab States region.
The US Biosphere Network (USBN) consists of 28 internationally recognized biosphere regions across the continental United States, the US Caribbean, Alaska, and HawaiâÂÂi. In 2021, the USBN adopted the term biosphere regions instead of biosphere reserves. The mission of the USBN is to foster national and international connections among biosphere regions, to facilitate their sharing of best practices, and to support their work toward connecting people and nature.