- Wadden Sea National Park of Schleswig-Holstein
- Wadia Institute of Himalayan Geology
- Wadia Institute of Himalayan Geology - WIHG (INDIA)
- Waen Associates Ltd
- Wageningen Environmental Research (Alterra)
- Wageningen Institute of Animal Science
- Wageningen Livestock Research
- Wageningen University and Research [Wageningen]
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- Wakayama University
- Wake Forest Baptist Medical Center
- Wake Forest University
- Wakkanai Hokusei Gakuen University
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- Walker Department of Chemical Engineering
- Wall Center for Pulmonary Vascular Disease [Stanford, CA, USA]
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- Walloon Center of Agricultural Research
- Walloon Excellence in Life sciences and BIOtechnology [Liège]
- Walmart Labs
- Walter Reed Army Institute of Research
- Walter Sisulu University (Walter Sisulu University)
- Warneford Hospital [Oxford]
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- Wayne State University [Detroit]
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- Weierstrass Institute, Berlin, Germany
- Weierstrass Institute for Applied Analysis and Stochastics
- Weifang University
- Weil Cornell Medical College
- Weill Cornell Medicine [Qatar]
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- Weitzmann Institute
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- Weizmann Institute of Science, Computer Science and Applied Mathematics Department, 234th Herzel st., Rehovot 7610001, Israel
- Weizmann Institute of Science [Rehovot, Israël]
- Welcome Trust Centre for Gene Regulation and Expression
- Well Advanced Solutions
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- Westlake Institute for Advanced Study
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- Weta
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- Whale watcher (Association)
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- WHO Regional Office for Europe [Copenhagen]
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- Wi6labs
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- Wickr
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- WINOA
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- WiseEuropa Institute
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- Wissembourg
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- Wistar Institute [Philadelphia]
- WITBE [Puteaux]
- WitMonki
- Witsee
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- Wold Laboratory, Mutsuno, atsuta-ku, Nagoya
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- Wolfson Centre for Age-related Diseases
- Wolfson Centre for Materials Processing, Brunel University
- Wolfson Medical Center
- Wolkite University
- Wollo University
- Women on Web
- Women’s and Children’s Hospital [Adelaide]
- Wood K plus - Competence Centre for Wood Composites and Wood Chemistry
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- Woods Hole Research Center
- Woodwell Climate Research Center
- Worcester Polytechnic Institute
- Worcester State University [Worcester]
- Word Data System
- Working Life Department, French National Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), 54500 Vandœuvre-lès-Nancy, France
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- World Bank Group
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- World Energy & Meteorology Council
- Worldfish
- WorldFish
- WorldFish Center
- World Health Organisation [N'Djamena, Chad]
- World Health Organization [Cotonou, Bénin]
- World Health Organization Division of Pacific Technical Support
- World Health Organization [Guinée]
- World Health Organization Intercountry Support Team for West Africa
- World Health Organization (WHO)
- World Inequality Lab
- World Institute of Kimchi [Gwangju]
- Worldline France
- World Meteorological Organization
- World Resources Forum
- Worldsensing
- World Soil Information
- World Trade Institute, University of Bern
- World Trade Organization
- World Vegetable Center
- World Whaling History
- World Wide Fund
- World Wide Fund for Nature
- World Wide Web Consortium
- World Wildlife Fund, Washington
- Woven Planet Holdings
- WPI Nano Life Science Institute, Kanazawa University, Kanazawa 920-1192
- WPO Paris
- Wright-Patterson Air Force Base
- Wright State University
- WRI Indonesia
- Wrocław Medical University
- Wroclaw Research Centre
- Wroclaw University of Economics
- Wroclaw University of Environmental and Life Sciences
- Wroclaw University of Science and Technology
- Wrocław University of Science and Technology = Politechnika Wroclawska [Wrocław]
- WSL
- WSL Institute for Snow and Avalanche Research SLF [Davos]
- W. Szafer Institute of Botany, Polish Academy of Sciences
- Wuhan Institute of Biological Products
- Wuhan Institute of Physics and Mathematics
- Wuhan Institute of Technology
- Wuhan Polytechnic University
- Wuhan Qingchuan University
- WuHAN School of Civil Engineering
- Wuhan University
- Wuhan University [China]
- Wuhan University of Science and Technology
- Wuhan University of Technology
- Wuppertal Institute for Climate Environment and Energy
- WuXi AppTec, Co., Ltd
- Wuyi University
- WWF
- WWF Gabon
- WWF Greater Mekong Programme
- Wyoming Game and Fish Department
- Wyzsza Szkola Bankowa University