- Wageningen Environmental Research (Alterra)
- Wageningen University and Research [Wageningen]
- Wake Forest University
- Warsaw Agricultural University
- Warsaw School of Economics
- Warsaw University of Life Sciences
- Waseda University [Tokyo, Japan]
- Washington Department of Fish and Wildlife
- Washington State University
- Washington University in Saint Louis
- Waste and Resources Action Programme
- Waterford Institute of Technology
- WeForest
- Weizenbaum Institut [Berlin]
- Weizmann Institute of Science [Rehovot, Israël]
- Wellspring University, Benin City
- Wesleyan University
- West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL), Ouagadougou, Burkina Faso
- West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL), Ouagadougou, Burkina Faso.
- West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL), Ouagadougou, Burkina Faso
- Westerdals Oslo ACT
- Western Australian Museum
- Western dairy center Utah State University
- Western Norway University of Applied Sciences
- Western Washington University
- Westfälische Wilhelms-Universität Münster = University of Münster
- Westnetz GmbH
- Wetlands International [Pays-Bas]
- White Arkitekter
- WHU – Otto Beisheim School of Management
- Wi6labs
- Wickr
- Wiener Holocaust Library
- Wilfrid Laurier University
- Williams College [Williamstown]
- Windeyer Institute for Medical Sciences
- Wire
- Wirtschaftsuniversität Wien [Austria]
- WiseEuropa Institute
- Wise Guys Ltd
- Wissenschaftszentrum Berlin für Sozialforschung
- WKL LINZ AUT
- Woods Hole Oceanographic Institution
- Worcester Polytechnic Institute
- Word Data System
- World Agroforestry Centre
- World Agroforestry Centre, Nairobi, Kenya
- World Bank
- World Bank Group
- World Bank Groupe - Banque Mondiale
- World Inequality Lab
- World Meteorological Organization
- World Soil Information
- World Wide Fund
- World Wide Fund for Nature
- World Wide Web Consortium
- World Wildlife Fund, Washington
- Wroclaw University of Economics
- Wroclaw University of Science and Technology
- Wuhan University [China]
- Wuppertal Institute for Climate Environment and Energy
- WU Vienna
- WWF