- Kagoshima University
- Kaiser Permanente
- Kaiserslautern University of Technology
- Kansas State University
- Kapteyn Astronomical Institute [Groningen]
- Karakter Child and Adolescent Psychiatry University Centre [Nijmegen]
- Karlsruhe Institute of Technology
- Karlsruher Institut für Technologie
- Karlstad University [Sweden]
- Karolinska Institute
- Karolinska Institutet [Stockholm]
- Karolinska University Hospital [Stockholm]
- Kasetsart University [Bangkok, Thailand]
- Katholieke Universiteit Brussel
- Kaunas University of Technology
- Kavli Institute for Astronomy and Astrophysics [Beijing]
- Kavli Institute for Astronomy and Astrophysics, Peking University
- Kavli Institute for Cosmology [Cambridge]
- Kavli Institute for Particle Astrophysics and Cosmology
- Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics, Stanford University
- Kavli Institute for Particle Astrophysics and Cosmology, Stanford University
- Kavli Institute for Theoretical Physics and Department of Physics, University of California
- Kavli Institute for the Physics and Mathematics of the Universe [Tokyo]
- Keck School of Medicine [Los Angeles]
- Kedge Business School
- KEDGE Business School [Marseille]
- Keio University [Tokyo]
- KEK
- Kent State University
- Kerneos Research Center
- Kern Technology Group
- Key Lab of Computer System and Architecture, Institute of Computing Technology [Beijing]
- Key Laboratory fo Analytical Chemistry for Biology and Medicine
- Key Laboratory for the Structure and Evolution of Celestial Objects
- Key Laboratory of Atomic and Molecular Nanosciences of Education Ministry, Department of Physics
- Key Laboratory of Computational Physics
- Key Laboratory of Energy Engineering Safety and Disaster Mechanics
- Key Laboratory of Functional Gene and Regulation Technologies under Chongqing Municipal Education Commission (Chongqing, China)
- Key Laboratory of Intelligent Perception and Image Understanding
- Key Laboratory of Marine Geology and Environment [China
- Key Laboratory of Modern Acoustics
- Key Laboratory of of Optical Astronomy
- Key Laboratory of Petroleum Resources Research [China]
- Key Laboratory of Petroleum Resources Research, Institution of Geology and Geophysics
- Key Laboratory of Resource Biology and Biotechnology
- Key-Obs SAS France
- KG Jebsen Centre for Psychosis Research
- Kidova
- KIDOVA
- Kiepenheuer-Institut für Sonnenphysik
- King Abdulaziz University
- King Abdullah University of Science and Technology [Saudi Arabia]
- King Faisal Specialist Hospital and Resarch Centre [Riyadh, Saudi Arabia]
- King Faisal Specialist Hospital and Research Centre
- King Khalid University [Abha]
- King Saud University [Riyadh]
- King's College
- King‘s College London
- Klipsch School of Electrical and Computer Engineering
- Knowledge Information and Web Intelligence
- Knowledge representation, reasonning
- Kobe University
- Koç University
- Konkoly Observatory
- Korea Advanced Institute of Science and Technology
- Korea Astronomy and Space Science Institute
- Korea Astronomy and Space Science Institute (KASI)
- Korea Atomic Energy Research Institute [Daejeon, south Korea]
- Korea Institute for Advanced Study
- Korea Institute of Fusion Energy
- Korea Institute of Science and Technology Information
- Korea National University of Education
- Korea Research Institute of Standards and Science [Daejon]
- KOSMA,
- KOSMA, I. Physikalisches Institut
- Koyama Astronomical Observatory [Kyoto-City]
- KRISS
- KRONO‐SAFE
- KTH Royal Institute of Technology [Stockholm]
- KTH School of Electrical Engineering
- Kulturhistorisk museum
- Kwame Nkrumah University of Science and Technology
- Kyoto Sangyo University
- Kyoto University
- Kyoto University of Advanced Science
- Kyushu Institute of Technology
- Kyushu University
- KyushuUniversity
- Kyushu University - faculty of mathematics