United States of America
List of UNESCO Chairs and UNITWIN Networks in Natural Sciences in the United States of America:
- UNITWIN Network for Improving Biological Sciences Education through the Development and Use of Information Technologies in some Arab States Universities (318) - Purdue University - established in 1997.
- UNESCO Chair in Sustainable Rivers (808) - University of Washington - established in 2008.
- UNESCO-Cousteau Ecotechnie Chair in Global Coastal Assessment (658) - University of Rhode Island, Narragansett - established in 2004.
- UNESCO-Cousteau Ecotechnie Chair in Coastal Resources (665) - State University of New Jersey - established in 2004.