Affiliations with the Letter K
- Kagoshima University -- Japan
- Kaiser Franz Josef Hospital -- Austria
- Kanagawa Institute of Technology -- Japan
- Kanazawa University -- Japan
- Kangwon National University -- Korea
- Kansas State University -- United States
- Kao Corporation -- Japan
- Karl-Franzens-Universität Graz -- Austria
- Karlsruhe Institute of Technology (KIT) -- Germany
- Karlstad University -- Taiwan
- Karolinska Institutet -- Sweden
- Karolinska University Hospital -- Sweden
- Karpov Institute of Physical Chemistry -- Russia
- Kasetsart University -- Thailand
- Katholieke Universiteit Leuven -- Belgium
- Kaucuk, A.S. -- Czech Republic
- Kazan Federal University -- Russia
- Keio University -- Japan
- Kellogg, Brown, & Root, Inc. -- United States
- Kenya National Cleaner Production Centre -- Kenya
- Kenya Polytechnic University College -- Kenya
- KFKI Atomic Energy Research Institute -- Hungary
- Khon Kaen University -- Thailand
- Kilmorie Consulting -- United Kingdom
- King's College London -- United Kingdom
- King's University College -- Canada
- Kitakyushu University -- Japan
- Kitasato University -- Japan
- Klinikum der Philipps Universität -- Germany
- Kobe University -- Japan