- Karelian Research Center of the Russian Academy of Science
- Karlsruhe Institute of Technology = Karlsruher Institut für Technologie
- Kasetsart University [Bangkok, Thailand]
- Kawatiri|Buller District Office, Department of Conservation [New Zealand]
- Keio University [Tokyo]
- Kenyon College
- Key Laboratory of Wetland Ecology and Environment
- King Abdullah University of Science and Technology [Saudi Arabia]
- King‘s College London
- Kiore Services
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