| # | Company | Employees |
|---|---|---|
| 1 | 20,440 | |
| 2 |
Broad Institute of MIT and Harvardbroadinstitute.org
Multidisciplinary teams collaborate across labs and programs to address complex biomedical challenges in human biology and disease worldwide. |
3,204 |
| 3 |
Forresterforrester.com
Provides research, consulting, and events to help leaders use customer-focused insights and data to drive growth and navigate change. |
1,653 |
| 4 |
Woods Hole Oceanographic Institutionwhoi.edu
A nonprofit organization dedicated to ocean research, engineering, and education, focused on advancing solutions for the planet's future |
1,330 |
| 5 |
Care Accesscareaccess.com
Global research site facilitating access to clinical research to increase availability of new treatments in communities worldwide |
860 |
| 6 |
Abdul Latif Jameel Poverty Action Lab (J-PAL)povertyactionlab.org
Global network conducting randomized evaluations to improve poverty reduction programs, informing policy through scientific evidence and training. |
760 |
| 7 |
Insteminstem.com
Provider of IT applications for early development healthcare market, offering solutions for data collection, management, and analysis worldwide Supports clients globally for data-driven decision making |
526 |
| 8 |
Center for Astrophysics | Harvard & Smithsoniancfa.harvard.edu
A collaborative research center between Harvard and the Smithsonian dedicated to advancing knowledge of the universe through astronomy and astrophysics |
519 |
| 9 |
Marine Biological Laboratorymbl.edu
A nonprofit research institution dedicated to exploring biology, marine biodiversity, and environmental science, while educating and informing the public |
503 |
| 10 |
Veristatveristat.com
A science-first CRO and consultancy specializing in complex therapies, offering strategic planning, regulatory expertise, and clinical trial execution for drug development |
487 |
| 11 |
U.S. DOT Volpe National Transportation Systems Centervolpe.dot.gov
A federally funded agency within the US Department of Transportation, providing innovative solutions and expertise to improve transportation systems nationwide |
428 |
| 12 |
Whitehead Institutewi.mit.edu
A leading nonprofit research institution collaborating with MIT, pioneering biomedical science through innovative research in cancer, immunology, genetics, and more |
405 |
| 13 |
National Bureau of Economic Researchnber.org
A nonprofit research organization conducting nonpartisan economic research through a network of over 1,700 affiliated scholars, without making policy recommendations |
375 |
| 14 |
Physical Sciences Inc.psicorp.com
Innovative technology solutions provider for government and commercial customers, specializing in developing advanced prototypes and transitioning technology from lab to use |
321 |
| 15 |
Ragon Institute of Mass General Brigham, MIT, and Harvardragoninstitute.org
Leading collaborative research institute focused on developing an HIV/AIDS vaccine, fostering innovative partnerships, funding promising studies, and accelerating bench-to-bedside research for immunology advancements |
319 |
| 16 |
Linduslindushealth.com
Accelerating clinical trials for life science pioneers by running faster, more reliable studies with unique software and access to 30 million Electronic Health Records |
218 |
| 17 |
Saint-Gobain Research North Americasgr-northamerica.saint-gobain.com
Innovative research lab developing ceramic and polymer solutions for energy efficiency, resource conservation, and various industries through advanced manufacturing processes |
187 |
| 18 |
Lux Researchluxresearchinc.com
Leading provider of tech-enabled research and advisory solutions, combining technical expertise with proprietary intelligence platform to help clients drive growth through technology innovation |
183 |
| 19 |
QuEra Computing Inc.quera.com
QuEra Computing is a Boston-based company developing advanced neutral-atoms based quantum computers for solving commercially relevant problems with their signature 256-qubit machine |
179 |
| 20 |
The AI Institutetheaiinstitute.com
A research-driven organization in Cambridge focusing on AI and robotics to develop intelligent machines for productivity, safety, and human well-being |
177 |
| 21 |
Eduventuresencoura.org
Provider of research, analysis, and advisory services for higher education leaders, offering insights on trends, technologies, and decision-making in education |
167 |
| 22 | 164 | |
| 23 |
Woodwell Climate Research Centerwoodwellclimate.org
A research center focused on climate science, people, and nature, partnering globally for impactful solutions to address the climate crisis |
158 |
| 24 |
Mitsubishi Electric Research Laboratoriesmerl.com
Research organization focusing on multi-physical modeling, optimization, control, signal processing, and artificial intelligence Emphasizes collaboration, publication, and impact measurement |
156 |
| 25 |
Center for Education Policy Research at Harvard Universitycepr.harvard.edu
A research partnership at Harvard University harnessing data to address education policy questions and improve educational outcomes for students |
156 |
| 26 |
Oracle Labsoracle.com
Cutting-edge research in machine learning & intelligent business processes to drive innovation & deliver solutions to global customers Join us! |
146 |
| 27 |
Aerodyne Researchaerodyne.com
Provides research, development, advanced sensors, and software for environmental quality, clean energy, propulsion technologies, and defense remote sensing. |
104 |
| 28 |
United Imaging Intelligenceuii-ai.com
A leading international medical AI company founded in 2017, providing innovative solutions for healthcare through AI technology in various medical fields |
70 |
| 29 |
Tufts Clinical and Translational Science Institute (CTSI)tuftsctsi.org
Dedicated to improving clinical care and health through innovative team science, connecting researchers, healthcare industry, and community stakeholders for better health outcomes |
46 |
| 30 |
MGH Mongan Institutemonganinstitute.org
A leading community of scientists focused on transforming health care and achieving health equity through research, training, and collaborations |
21 |
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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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