Affiliations with the Letter W
- W.R. Grace & Co. - Conn. -- United States
- Wageningen Universiteit -- Netherlands
- Warsaw University -- Poland
- Warsaw University of Technology -- Poland
- Warwick University -- United Kingdom
- Waseda University -- Japan
- Washington State University -- United States
- Washington University in Saint Louis -- United States
- Waterborne Environmental, Inc. -- United States
- Wayne State University -- United States
- Weizmann Institute of Science -- Israel
- Well-Being Biochemical Corporation -- Taiwan
- Wendy Warr & Associates -- United Kingdom
- Westeinde Ziekenhuis -- Netherlands
- Westfälische Wilhelms-Universität -- Germany
- Westworks Consulting, Ltd. -- Canada
- Wiley -VCH Verlag GmbH -- Germany
- Windber Research Institute -- United States
- Wockhardt Research Centre -- India
- Worcester Polytechnic Institute -- United States
- World Ass'n. of Theoretical & Computational Chemists -- Australia
- World Health Organization -- India
- World Health Organization -- Switzerland
- World Meteorological Organization/AREP -- Switzerland
- Worldnutra -- United States
- WRC PLC -- United Kingdom
- Wroclaw University of Technology -- Poland
- Wuhan University -- China
- Wyatt Technology Corporation -- United States