- Kadir Has University
- Kalray
- Kamnoetvidya Science Academy
- Kansai University
- Kansas State University
- Kantar
- Kaposvár University
- Karakoram International University
- Karl-Franzens-Universität Graz
- Karlsruhe Institute of Technology
- Karlsruher Institut für Technologie
- Karlsruher Institut für Technologie - Institut für Verkehrswesen
- Karpov Institute of Physical Chemistry
- Kart'eau
- Kart’eau
- Kasetsart University
- Kedge Business School
- KEDGE Business School [Marseille]
- KEK
- Kélonia - Observatoire des tortues marines
- Kenta Biotech Ltd
- Kent State University
- Kenyatta University of Nairobi
- KEREVAL
- kerlabs
- Kermap [Rennes]
- Kernfysisch vesneller Instituut
- KfV
- KFV, Austrian Road Safety Board
- KGZS-Zavod
- Kharazmi University
- Kiel University
- Kinergos Conseil
- King Abdullah University of Science and Technology
- King Saud University [Riyadh]
- King‘s College London
- Kingston University Business School
- KIT|NTNU
- Kmetijski Institute of Slovenia
- Knipovich polar Research Institute of Marine Fisheries and Oceanography
- Know-Center Graz
- Knowledge Media Research Center (KMRC) - Tübingen
- KNT
- Kobe University
- Kobe University Kobe
- Koç University
- KOENA
- KONE Corporation
- KONTRON [Ismaning]
- KONTRON [Toulon]
- Korea Advanced Institute of Science and Technology
- Korea Astronomy and Space Science Institute
- Korea Electronics Technology Institute [Seongnam-si]
- Korea Institute for Advanced Study
- Korea Telecom
- Korea University [Seoul]
- Korilog [Muzillac]
- KRTK Institute for Regional Studies
- Krypton Brothers (.)
- KTU - Kaunas University of Technology
- Kútvölgyi Clinical Centre
- Kuwait University
- KXEN
- Kyoto University [Kyoto]
- Kyushu University [Fukuoka]