- W. Szafer Institute of Botany
- W. Szafer Institute of Botany, Polish Academy of Sciences
- WSL Institute for Snow and Avalanche Research SLF
- WWF Guyane
- WWF Suriname
- WWF-Netherlands
- Wageningen Marine Research [The Netherlands]
- Wageningen University and Research [Wageningen]
- Wake Forest University
- Wealth from oceans National Research Flagship
- Weber State University
- Werribee Open Range Zoo
- Western Ecological Research Center
- Westfälische Wilhelms-Universität Münster = University of Münster
- Wicking Dementia Research and Education Centre [Australia]
- Wild Press
- Wildfowl & Wetlands Trust [UK]
- Wildlife Biology Program
- Wildlife Computers
- Wildlife Computers [USA]
- Wildlife Conservation Research Unit [Oxford]
- Wildlife Conservation Society
- Wildlife Conservation Society [Argentina]
- Wildlife Conservation Society [Chile]
- Wildlife Management International Limited
- Wildlife Research Division
- Wildlife Research Division, Environment and Climate Change [Mount Pearl]
- Wildlife and Conservation Sciences
- Williams College [Williamstown]
- Woods Hole Oceanographic Institution
- World Land Trust
- Wroclaw University of Science and Technology