- Jackson Laboratory
- Jacksonville University
- James Cook University
- Japan Advanced Institute of Science and Technology
- Jet Propulsion Laboratory
- JILA
- John Innes Centre
- John Theurer Cancer Center
- Johns Hopkins Center for Health Security
- Johns Hopkins University
- Johns Hopkins University Bloomberg School of Public Health
- Johns Hopkins University School of Medicine
- Joint Astronomy Centre
- Joint Quantum Institute
- Josep Carreras Leukaemia Research Institute
- Joslin Diabetes Center
- Journal of Clinical Investigation
- Journal of Studies on Alcohol and Drugs
- Journal of the National Cancer Institute
- JPL/NASA
- Julius-Maximilians-Universität Würzburg
- Juvenile Diabetes Research Foundation International
