| # | Company | Employees |
|---|---|---|
| 1 |
The National Institutes of Healthnih.gov
Largest public funder of biomedical research investing billions annually to improve health, reduce illness, and support medical breakthroughs worldwide. |
28,537 |
| 2 |
University of Marylandumd.edu
Public research university emphasizing hands-on learning, interdisciplinary collaboration, innovation, entrepreneurship, and global citizenship through diverse academic and research opportunities. |
21,670 |
| 3 |
The Johns Hopkins Universityjhu.edu
Leading research university offering diverse academic programs across multiple campuses, fostering innovation and improving lives through education and discovery. |
18,221 |
| 4 |
Johns Hopkins Applied Physics Laboratoryjhuapl.edu
University-affiliated research center providing technical expertise, prototyping, research, development, and analysis for national security and scientific challenges. |
7,850 |
| 5 |
The Johns Hopkins University School of Medicinehopkinsmedicine.org
Provider of top-ranked medical and graduate programs, clinical fellowships, residencies, basic science research opportunities, and medical art programs with renowned experts |
7,057 |
| 6 |
Towson Universitytowson.edu
An established and rapidly growing public university offering a diverse range of degree programs, resources, and opportunities for student success and preparation for the future |
5,861 |
| 7 |
University of Maryland Baltimore Countyumbc.edu
Public research university focused on innovation, interdisciplinary education, undergraduate success, and groundbreaking research with a strong emphasis on science, engineering, and information technology |
5,495 |
| 8 |
National Cancer Institute (NCI)cancer.gov
Leading federal agency for cancer research, part of the National Institutes of Health Visit wwwcancergov for more information Privacy policy available |
5,247 |
| 9 |
National Institute of Standards and Technology (NIST)nist.gov
An innovative federal agency advancing measurement science, standards, and technology to promote US innovation and industrial competitiveness |
4,946 |
| 10 |
NASA Goddard Space Flight Centernasa.gov
A major US laboratory developing and operating unmanned scientific spacecraft for NASA's Earth observation, astronomy, planetary science, and astrophysics missions |
4,049 |
| 11 |
University of Maryland, Baltimore (UMB)umaryland.edu
A leading public research university in Maryland offering professional schools in health, law, and human services since 1807 |
3,994 |
| 12 |
Johns Hopkins Bloomberg School of Public Healthpublichealth.jhu.edu
A leading institution in public health education and research, dedicated to improving global health through knowledge discovery and application |
3,721 |
| 13 |
Morgan State Universitylinktr.ee
A public urban research university offering over 125 academic programs, preparing diverse graduates to lead through innovative education and community service |
3,501 |
| 14 |
Howard Hughes Medical Institute (HHMI)hhmi.org
Funding scientists and innovative research to advance human health, biology understanding, science education, and public engagement nationwide. |
2,304 |
| 15 |
University of Maryland School of Medicinemedschool.umaryland.edu
Leading biomedical research institution with top-tier faculty and extensive global reach, dedicated to advancing innovative research in virology, genomics, and global health |
2,179 |
| 16 |
The Henry M. Jackson Foundation for the Advancement of Military Medicinehjf.org
A nonprofit organization supporting military medical research, providing program management services to accelerate progress and advance Military Medicine |
2,036 |
| 17 |
Uniformed Services Universityusuhs.edu
A federal health sciences university training healthcare professionals to support the Military Health System Disclosures: Follows, likes, reposts do not equal endorsement |
1,893 |
| 18 |
University of Maryland Eastern Shoreumes.edu
A historically black university offering accredited degree programs in various fields, research opportunities, and graduate-level programs focusing on teaching and stewardship |
1,588 |
| 19 |
NIH Innovatesnih.gov
A federal agency focused on researching mental disorders, part of NIH Conducts basic and clinical research to prevent, treat, and cure mental illnesses |
1,542 |
| 20 |
National Institute of Allergy and Infectious Diseases (NIAID)niaid.nih.gov
Conducts and supports research on infectious, immunologic, and allergic diseases to develop therapies, vaccines, and technologies for improved global health |
1,330 |
| 21 |
U.S. Army DEVCOM Army Research Laboratoryarl.devcom.army.mil
Official page Content shared does not imply endorsement Stay updated on company news and announcements here |
1,134 |
| 22 |
Coppin State Universitycoppin.edu
A Historically Black Institution in an urban setting, providing education opportunities, promoting lifelong learning, leadership, diversity, and economic development |
1,061 |
| 23 |
University of Maryland - Robert H. Smith School of Businessrhsmith.umd.edu
A globally renowned institution offering a wide range of management education programs, including MBA, MS, MFin, and executive education, and outreach services to corporations |
998 |
| 24 |
Johns Hopkins Whiting School of Engineeringengineering.jhu.edu
The company's faculty and students work on cutting-edge research in various fields including wind engineering, computational medicine, and surgical robotics |
992 |
| 25 |
USAMRIID โ U.S. Army Medical Research Institute of Infectious Diseaseshealth.mil
Leading research institute developing medical solutions to protect military and civilian populations from biological threats through vaccines, drugs, diagnostics, and collaborations with government agencies and industry partners |
968 |
| 26 |
NOAA Fisheriesfisheries.noaa.gov
Utilizing science-based approaches, the organization focuses on conservation and management of marine resources to promote sustainable living and healthy ecosystems |
861 |
| 27 |
Space Telescope Science Institutestsci.edu
A leading space institute in Maryland, operating advanced space telescopes, curating data archives, conducting scientific research, and promoting diversity and inclusivity |
763 |
| 28 |
Walter Reed Army Institute of Researchwrair.health.mil
The company conducts research to develop vaccines, drugs, and solutions to protect military personnel from infectious diseases and enhance their resilience and readiness |
678 |
| 29 |
National Institutes of Health (NIH): Intramural Research Program (IRP)irp.nih.gov
Leading biomedical research institution within the National Institutes of Health, conducting innovative basic, translational, and clinical research to advance medical discoveries and treatments |
670 |
| 30 |
Frederick National Laboratory for Cancer Researchfrederick.cancer.gov
The company is dedicated to advancing biomedical sciences to improve human health, particularly focusing on cancer, AIDS, and emerging infectious diseases |
659 |
| 31 |
John Hopkins Universityjhu.edu
A pioneering institution dedicated to teaching, research, and patient care, leading the way in innovation and securing top federal research funds |
658 |
| 32 |
National Heart, Lung, and Blood Institutenhlbi.nih.gov
A global leader in research, training, and education to prevent and treat heart, lung, and blood diseases, promoting longer, fulfilling lives |
631 |
| 33 |
HJF Medical Research Internationalhjfmri.org
A nonprofit supporting international medical research and HIV prevention programs, focusing on vaccine development, clinical research, infectious disease surveillance, and global health initiatives |
630 |
| 34 |
National Center for Biotechnology Information (NCBI)ncbi.nlm.nih.gov
International resource providing access to public biological databases and software tools for data analysis, performing computational biology research, archiving, and advancing understanding of health and disease. |
388 |
| 35 |
University of Maryland โ College of Computer, Mathematical, and Natural Sciencescmns.umd.edu
Educational institution offering undergraduate and graduate programs in computer, mathematical, and natural sciences, with a focus on scientific research and discovery |
188 |
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.
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