# Research institutes around the world

Tamtam tracks 5,686 research institutes worldwide. This list ranks the 100 largest by number of employees on LinkedIn, led by University of California, Northwell Health and NASA - National Aeronautics and Space Administration. Their median headcount is 20,729. Half of them were founded in 1876 or later. The most common headquarters are New York (5), Boston (4) and Cambridge (3).

This selection of research institutes includes large organizations primarily in higher education and healthcare. The University of California, for example, focuses on educating, advancing research, and improving health. Northwell Health is a major New York healthcare system with hospitals and research institutes. NASA specializes in space exploration and scientific discovery. Einstein Hospital Israelita offers healthcare, education, and research programs.

The data shows a concentration of these large research-oriented organizations in the United States, with a significant number of universities and healthcare systems appearing on the list. Many of these institutions were founded in the 19th century, indicating a long-standing commitment to research and education.

🌍 World · 100 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [University of California](https://www.tamtam.ai/c/university-of-california) (jobs.universityofcalifornia.edu)<br>Educating top minds, advancing research, engaging communities, supporting economy, improving health, protecting environment, and driving innovation across California. | Higher Education | 🇺🇸 Oakland | 152,503 |  |
| 2 | [Northwell Health](https://www.tamtam.ai/c/northwell-health) (northwell.edu)<br>Largest New York healthcare system with hospitals, outpatient facilities, research institutes, medical education, and extensive patient care services. | Hospitals and Health Care | 🇺🇸 Lake Success | 56,405 | 1997 |
| 3 | [NASA - National Aeronautics and Space Administration](https://www.tamtam.ai/c/nasa-national-aeronautics-and-space-administration) (nasa.gov)<br>A pioneering organization pushing the boundaries of space exploration, scientific discovery, and aeronautics research to benefit humanity and improve life on Earth | Aviation and Aerospace Component Manufacturing | 🇺🇸 Washington | 50,817 | 1958 |
| 4 | [Einstein Hospital Israelita](https://www.tamtam.ai/c/einstein-hospital-israelita) (einstein.br)<br>A leading healthcare institution offering cutting-edge treatments, compassionate care, social responsibility initiatives, and education and research programs for the community | Hospitals and Health Care | 🇧🇷 São Paulo | 40,979 |  |
| 5 | [University of Michigan](https://www.tamtam.ai/c/university-of-michigan) (umich.edu)<br>A prestigious institution dedicated to excellence in knowledge, art, and leadership development, serving Michigan and the world for the greater good | Higher Education | 🇺🇸 Ann Arbor | 39,204 | 1817 |
| 6 | [Harvard University](https://www.tamtam.ai/c/harvard-university) (harvard.edu)<br>An institution dedicated to teaching, learning, and research, producing global leaders across disciplines since 1636 Maintains flagship social media channels | Higher Education | 🇺🇸 Cambridge | 34,940 |  |
| 7 | [University of Washington](https://www.tamtam.ai/c/university-of-washington) (washington.edu)<br>Public research university offering diverse educational programs, extensive campuses, cultural activities, and high-quality medical care, engaging with communities. | Higher Education | 🇺🇸 Seattle | 32,106 |  |
| 8 | [Penn State University](https://www.tamtam.ai/c/penn-state-university) (psu.edu)<br>Providing interdisciplinary education and resources across multiple campuses, fostering student success and positive global community impact through knowledge and experience. | Higher Education | 🇺🇸 University Park | 31,986 | 1855 |
| 9 | [University of Florida](https://www.tamtam.ai/c/university-of-florida) (ufl.edu)<br>A major public research university in Florida with established programs in international education, research, and service, founded in 1853 | Higher Education | 🇺🇸 Gainesville | 31,315 |  |
| 10 | [University of Wisconsin-Madison](https://www.tamtam.ai/c/university-of-wisconsin-madison) (wisc.edu)<br>A prestigious public university in Madison, offering a wide range of liberal arts studies, professional programs, and student activities on a sprawling campus | Higher Education | 🇺🇸 Madison | 30,836 |  |
| 11 | [The Ohio State University](https://www.tamtam.ai/c/the-ohio-state-university) (osu.edu)<br>Large public university offering extensive research opportunities and multiple regional campuses, serving as a model for Ohio's higher education system. | Higher Education | 🇺🇸 Columbus | 30,775 | 1870 |
| 12 | [Texas A&M University](https://www.tamtam.ai/c/texas-a-and-m-university) (tamu.edu)<br>Public university offering diverse research, military officer training, athletics, and hosting presidential library with strong community values and hospitality. | Higher Education | 🇺🇸 College Station | 30,552 | 1876 |
| 13 | [Mount Sinai Health System](https://www.tamtam.ai/c/mount-sinai-health-system) (mountsinai.org)<br>Provides distinguished care, conducts transformative research, and advances biomedical education through hospitals, a medical school, and extensive ambulatory network. | Hospitals and Health Care | 🇺🇸 New York | 30,202 | 2013 |
| 14 | [Arizona State University](https://www.tamtam.ai/c/arizona-state-university) (asu.edu)<br>Public research university focused on student success, groundbreaking research, community impact, and extensive alumni network across multiple campuses. | Higher Education | 🇺🇸 Tempe | 29,921 | 1885 |
| 15 | [NYU Langone Health](https://www.tamtam.ai/c/nyu-langone-health) (jobs.nyulangone.org)<br>World-class academic medical center with top-ranked patient care, education, and research programs, serving diverse communities with excellence and inclusive values | Hospitals and Health Care | 🇺🇸 New York | 29,840 |  |
| 16 | [UCLA](https://www.tamtam.ai/c/ucla) (ucla.edu)<br>A renowned public research university offering diverse academic programs in a picturesque campus location within a thriving global city | Higher Education | 🇺🇸 Los Angeles | 29,540 | 1919 |
| 17 | [Tecnológico de Monterrey](https://www.tamtam.ai/c/tecnologico-de-monterrey) (tec.mx)<br>Private university system promoting research, knowledge transfer, and technology to support economic, political, and social development in Mexico. | Higher Education | 🇲🇽 Monterrey | 29,006 | 1943 |
| 18 | [University of Toronto](https://www.tamtam.ai/c/university-of-toronto) (defygravitycampaign.utoronto.ca)<br>Leading Canadian university focused on research, innovation, and global education to address pressing societal challenges and prepare students for success | Higher Education | 🇨🇦 Toronto | 28,832 |  |
| 19 | [Stanford University](https://www.tamtam.ai/c/stanford-university) (stanford.edu)<br>Leading research university fostering innovation, education, and global citizenship with extensive resources, diverse programs, and strong community partnerships. | Higher Education | 🇺🇸 Stanford | 28,573 |  |
| 20 | [The National Institutes of Health](https://www.tamtam.ai/c/the-national-institutes-of-health) (nih.gov)<br>Largest public funder of biomedical research investing billions annually to improve health, reduce illness, and support medical breakthroughs worldwide. | Biotechnology Research | 🇺🇸 Bethesda | 28,537 | 1887 |
| 21 | [University of Minnesota](https://www.tamtam.ai/c/university-of-minnesota) (twin-cities.umn.edu)<br>Offers a vast array of baccalaureate, master's, and doctoral degrees across numerous fields at five campuses, providing extensive education and outreach. | Higher Education | 🇺🇸 Minneapolis and St. Paul | 28,030 | 1851 |
| 22 | [New York University](https://www.tamtam.ai/c/new-york-university) (nyu.edu)<br>Research university with global campuses and academic sites offering diverse programs in arts, sciences, law, medicine, business, and professional studies. | Higher Education | 🇺🇸 New York | 26,981 |  |
| 23 | [University of Missouri System](https://www.tamtam.ai/c/university-of-missouri-system) (umsystem.edu)<br>A prestigious public research institution in Missouri, promoting education, research, and service to serve the state, nation, and beyond | Higher Education | 🇺🇸 Columbia | 26,615 |  |
| 24 | [University of Buenos Aires](https://www.tamtam.ai/c/university-of-buenos-aires) (uba.ar)<br>Public university offering extensive undergraduate and postgraduate programs, renowned for academic excellence and significant research contributions in Argentina. | Higher Education | 🇦🇷 Buenos Aires | 26,362 | 1821 |
| 25 | [The University of Texas at Austin](https://www.tamtam.ai/c/the-university-of-texas-at-austin) (utexas.edu)<br>A prestigious public university with a large campus, diverse academic programs, and a significant number of students, faculty, and staff | Higher Education | 🇺🇸 Austin | 26,268 | 1883 |
| 26 | [Michigan State University](https://www.tamtam.ai/c/michigan-state-university) (msu.edu)<br>Leading global public university offering over 400 academic programs, fostering education, research, and community engagement with Spartan spirit. | Higher Education | 🇺🇸 East Lansing | 26,149 | 1855 |
| 27 | [Purdue University](https://www.tamtam.ai/c/purdue-university) (purdue.edu)<br>Major research university offering top programs in science, engineering, pharmacy, business, and agriculture with diverse global student community. | Higher Education | 🇺🇸 West Lafayette | 25,360 | 1869 |
| 28 | [The University of British Columbia](https://www.tamtam.ai/c/the-university-of-british-columbia) (ubc.ca)<br>a global center for research and teaching, consistently ranked among the top 20 public universities worldwide. | Higher Education | 🇨🇦 Vancouver | 25,036 |  |
| 29 | [University of Illinois Urbana-Champaign](https://www.tamtam.ai/c/university-of-illinois-urbana-champaign) (illinois.edu)<br>Leading public university with strong focus on education, research, global student opportunities, faculty innovation, and significant economic and community impact. | Higher Education | 🇺🇸 Champaign | 24,692 |  |
| 30 | [UCL](https://www.tamtam.ai/c/ucl) (ucl.ac.uk)<br>Leading multidisciplinary university in London, promoting academic excellence, inclusive education, and impactful research addressing real-world challenges. | Research Services | 🇬🇧 London | 24,678 |  |
| 31 | [University of California, Berkeley](https://www.tamtam.ai/c/university-of-california-berkeley) (berkeley.edu)<br>Public research university offering diverse academic programs, fostering innovation, and serving as a flagship institution in California. | Higher Education | 🇺🇸 Berkeley | 24,082 | 1868 |
| 32 | [University of Southern California](https://www.tamtam.ai/c/university-of-southern-california) (usc.edu)<br>A leading private research university located in Los Angeles, focused on academic excellence and fostering a community of alumni and students | Higher Education | 🇺🇸 Los Angeles | 23,894 | 1880 |
| 33 | [University of Kentucky](https://www.tamtam.ai/c/university-of-kentucky) (uky.edu)<br>A public research university dedicated to improving lives through teaching, research, healthcare, cultural enrichment, and economic development for over 150 years | Higher Education | 🇺🇸 Lexington | 23,783 | 1865 |
| 34 | [Massachusetts Institute of Technology](https://www.tamtam.ai/c/massachusetts-institute-of-technology) (web.mit.edu)<br>A private research university in Cambridge, Massachusetts, advancing knowledge and educating students in science and technology-focused areas | Higher Education | 🇺🇸 Cambridge | 23,586 | 1861 |
| 35 | [Columbia University](https://www.tamtam.ai/c/columbia-university) (columbia.edu)<br>A renowned leader in higher education, Columbia attracts top minds to drive academic inquiry, make groundbreaking discoveries, and serve society globally | Higher Education | 🇺🇸 New York | 23,565 | 1754 |
| 36 | [USP - Universidade de São Paulo](https://www.tamtam.ai/c/usp-universidade-de-sao-paulo) (www5.usp.br)<br>Educates students, conducts research, and contributes to scientific productivity, recognized by global rankings for faculty, student, and staff dedication. | Higher Education | 🇧🇷 São Paulo | 23,205 | 1934 |
| 37 | [University of Oxford](https://www.tamtam.ai/c/university-of-oxford) (ox.ac.uk)<br>A leading university in various academic disciplines, fostering innovation, entrepreneurship, and social support while upholding respect and banning hate speech | Higher Education | 🇬🇧 Oxford | 23,103 | 1096 |
| 38 | [UT MD Anderson](https://www.tamtam.ai/c/ut-md-anderson) (mdanderson.org)<br>A leading cancer center focused on patient care, research, education, and prevention, with top rankings in cancer care and a mission to #EndCancer | Hospitals and Health Care | 🇺🇸 Houston | 23,100 | 1944 |
| 39 | [CNRS](https://www.tamtam.ai/c/cnrs) (cnrs.fr)<br>A world-leading research institution exploring life, matter, the universe, and society to address current and future challenges with scientific excellence | Research Services | 🇫🇷 Paris | 23,074 | 1939 |
| 40 | [University of Pennsylvania](https://www.tamtam.ai/c/university-of-pennsylvania) (upenn.edu)<br>Renowned Ivy League university with 12 schools offering a wide range of programs including arts, sciences, engineering, business, and medicine | Higher Education | 🇺🇸 Philadelphia | 22,558 | 1740 |
| 41 | [UC San Diego](https://www.tamtam.ai/c/uc-san-diego) (ucsd.edu)<br>A globally renowned research university fostering collaboration, driving discoveries, and equipping students to solve pressing global issues as changemakers | Higher Education | 🇺🇸 La Jolla | 22,205 |  |
| 42 | [Penn Medicine, University of Pennsylvania Health System](https://www.tamtam.ai/c/penn-medicine-university-of-pennsylvania-health-system) (pennmedicine.org)<br>Leading academic medical center combining cutting-edge research, comprehensive patient care, and education to improve health and transform lives regionally. | Hospitals and Health Care | 🇺🇸 Philadelphia | 21,979 |  |
| 43 | [University of California, San Francisco](https://www.tamtam.ai/c/university-of-california-san-francisco) (ucsf.edu)<br>Driven by converging research, education, and patient care for breakthroughs. Pursues integrated excellence through collaboration among professional and graduate schools, medical center, and research programs. | Higher Education | 🇺🇸 San Francisco | 21,955 | 1873 |
| 44 | [University of Melbourne](https://www.tamtam.ai/c/university-of-melbourne) (unimelb.edu.au)<br>Provides high-quality education and research addressing global social, economic, and environmental challenges with strong community connections. | Higher Education | 🇦🇺 Melbourne | 21,904 | 1853 |
| 45 | [Vanderbilt University Medical Center](https://www.tamtam.ai/c/vanderbilt-university-medical-center) (vanderbilthealth.com)<br>Leading academic medical center, excels in patient care, research, and education, solving complex medical problems through innovation and collaboration. Specialized care for various conditions, including transplants and pediatric cancer. | Hospitals and Health Care | 🇺🇸 Nashville | 21,888 | 1875 |
| 46 | [Monash University](https://www.tamtam.ai/c/monash-university) (monash.edu)<br>Leading research-intensive university offering a wide range of undergraduate, postgraduate, and research courses with a global presence and significant impact beyond academia | Higher Education | 🇦🇺 Victoria | 21,673 |  |
| 47 | [University of Maryland](https://www.tamtam.ai/c/university-of-maryland) (umd.edu)<br>Public research university emphasizing hands-on learning, interdisciplinary collaboration, innovation, entrepreneurship, and global citizenship through diverse academic and research opportunities. | Higher Education | 🇺🇸 College Park | 21,670 |  |
| 48 | [University of California, Davis](https://www.tamtam.ai/c/university-of-california-davis) (ucdavis.edu)<br>Public university offering diverse undergraduate and graduate programs, conducting extensive research, fostering innovation, and preparing future leaders across multiple disciplines. | Higher Education | 🇺🇸 Davis | 21,439 | 1908 |
| 49 | [University of Arizona](https://www.tamtam.ai/c/university-of-arizona) (arizona.edu)<br>Leading public research university in the American Southwest, enriching communities with top-notch research, resources, and career-focused education Your investment in yourself | Higher Education | 🇺🇸 Tucson | 21,024 |  |
| 50 | [North Carolina State University](https://www.tamtam.ai/c/north-carolina-state-university) (ncsu.edu)<br>Comprehensive university specializing in STEM education and research, committed to improving quality of life locally and globally through innovation. | Higher Education | 🇺🇸 Raleigh | 20,729 | 1887 |
| 51 | [King's College London](https://www.tamtam.ai/c/king-s-college-london) (kcl.ac.uk)<br>Top-ranked university offering world-class education and research, fostering innovation and positive societal impact globally and locally. | Research Services | 🇬🇧 London | 20,705 |  |
| 52 | [University of Cambridge](https://www.tamtam.ai/c/university-of-cambridge) (cam.ac.uk)<br>A leading research university with 31 Colleges and over 150 departments, faculties, and schools, focused on excellence in education and research | Research Services | 🇬🇧 Cambridge | 20,304 |  |
| 53 | [The University of Manchester](https://www.tamtam.ai/c/the-university-of-manchester) (manchester.ac.uk)<br>A prestigious university known for teaching excellence, research innovation, and a history of world firsts, with a large global alumni community | Higher Education | 🇬🇧 Manchester | 20,294 | 1824 |
| 54 | [University of Sydney](https://www.tamtam.ai/c/university-of-sydney) (sydney.edu.au)<br>Top Australian university focusing on research excellence and inclusive education, supporting diverse students and advancing knowledge globally. | Higher Education | 🇦🇺 The University of Sydney | 20,284 |  |
| 55 | [The University of North Carolina at Chapel Hill](https://www.tamtam.ai/c/the-university-of-north-carolina-at-chapel-hill) (unc.edu)<br>A leading public university known for its vibrant community, diverse student body, academic excellence, and unmatched value in higher education | Higher Education | 🇺🇸 Chapel Hill | 20,098 |  |
| 56 | [Massachusetts General Hospital](https://www.tamtam.ai/c/massachusetts-general-hospital) (massgeneral.org)<br>Dedicated to providing top-notch healthcare in a compassionate environment through innovative research and education, improving health in diverse communities served | Hospitals and Health Care | 🇺🇸 Boston | 20,001 | 1811 |
| 57 | [Cornell University](https://www.tamtam.ai/c/cornell-university) (cornell.edu)<br>Privately endowed research university partnering with New York State, focusing on public engagement to improve quality of life globally. | Higher Education | 🇺🇸 Ithaca | 19,921 | 1865 |
| 58 | [Georgia Institute of Technology](https://www.tamtam.ai/c/georgia-institute-of-technology) (gatech.edu)<br>Focused technological education and research for over 25,000 students across multiple colleges, fostering innovation through numerous research centers. | Higher Education | 🇺🇸 Atlanta | 19,765 | 1888 |
| 59 | [Yale University](https://www.tamtam.ai/c/yale-university) (news.yale.edu)<br>Research university fostering global connections, creativity, and innovation, emphasizing student learning and positive worldwide impact. | Higher Education | 🇺🇸 New Haven | 19,675 |  |
| 60 | [Memorial Sloan Kettering Cancer Center](https://www.tamtam.ai/c/memorial-sloan-kettering-cancer-center) (mskcc.org)<br>Specialized teams provide personalized cancer care, conduct innovative research, and train future scientists and clinicians worldwide. | Hospitals and Health Care | 🇺🇸 New York | 19,653 | 1884 |
| 61 | [CEA](https://www.tamtam.ai/c/cea) (cea.fr)<br>Public body conducting research, development, and innovation in low-carbon energy, defense, IT, and health, for national security and technological advancement. | Research Services | 🇫🇷 Paris | 19,468 |  |
| 62 | [University of Pittsburgh](https://www.tamtam.ai/c/university-of-pittsburgh) (pitt.edu)<br>Top-ranked public institution in Pennsylvania, member of leading research universities Known for innovative discoveries and shaping future paths | Higher Education | 🇺🇸 Pittsburgh | 19,349 | 1787 |
| 63 | [UT Southwestern Medical Center](https://www.tamtam.ai/c/ut-southwestern-medical-center) (utsouthwestern.edu)<br>An academic medical center with top research, education, and patient care; offering training to students and providing specialized healthcare services | Hospitals and Health Care | 🇺🇸 Dallas | 19,275 | 1943 |
| 64 | [University of South Florida](https://www.tamtam.ai/c/university-of-south-florida) (usf.edu)<br>A metropolitan research university with campuses in Tampa Bay, offering undergraduate, graduate, and professional degrees, innovative research, and a world-class educational experience | Higher Education | 🇺🇸 Tampa | 19,255 | 1956 |
| 65 | [Sírio-Libanês](https://www.tamtam.ai/c/sirio-libanes) (hospitalsiriolibanes.org.br)<br>A renowned healthcare institution with philanthropic roots, offering top-notch medical services, cutting-edge technology, education, research, and social responsibility initiatives for 100 years | Hospitals and Health Care | 🇧🇷 São Paulo | 19,137 | 1921 |
| 66 | [University of Chicago](https://www.tamtam.ai/c/university-of-chicago) (uchicago.edu)<br>A prestigious academic institution encouraging scholars and students to think critically, explore various disciplines, and challenge conventional ideas for global enrichment | Higher Education | 🇺🇸 Chicago | 18,526 |  |
| 67 | [King AbdulAziz University](https://www.tamtam.ai/c/king-abdulaziz-university) (kau.edu.sa)<br>Public university fostering knowledge society with advanced education, scientific research, community engagement, innovation, and leadership development through partnerships. | Higher Education | 🇸🇦 | 18,524 | 1967 |
| 68 | [Indiana University Bloomington](https://www.tamtam.ai/c/indiana-university-bloomington) (bloomington.iu.edu)<br>Residential, research-intensive campus offering academic excellence, professional programs, global initiatives, and nationally ranked schools in various disciplines to students | Higher Education | 🇺🇸 Bloomington | 18,459 | 1820 |
| 69 | [Rutgers University](https://www.tamtam.ai/c/rutgers-university) (rutgers.edu)<br>Leading institution for higher education in New Jersey, offering a wide range of undergraduate, graduate, and professional degree programs across various departments and schools | Higher Education | 🇺🇸 New Brunswick | 18,394 | 1766 |
| 70 | [Amsterdam UMC](https://www.tamtam.ai/c/amsterdam-umc) (amsterdamumc.org)<br>A leading medical university centers in Amsterdam, focusing on providing excellent patient care, advanced treatment, teaching, training, and cutting-edge research | Hospitals and Health Care | 🇳🇱 Amsterdam | 18,288 |  |
| 71 | [Imperial College London](https://www.tamtam.ai/c/imperial-college-london) (imperial.ac.uk)<br>Leading university specializing in science, medicine, engineering, and business, fostering interdisciplinary collaboration to advance knowledge and improve health. | Research Services | 🇬🇧 London | 18,233 | 1907 |
| 72 | [The Johns Hopkins University](https://www.tamtam.ai/c/the-johns-hopkins-university) (jhu.edu)<br>Leading research university offering diverse academic programs across multiple campuses, fostering innovation and improving lives through education and discovery. | Higher Education | 🇺🇸 Baltimore | 18,221 |  |
| 73 | [National University of Singapore](https://www.tamtam.ai/c/national-university-of-singapore) (nus.edu.sg)<br>University focused on education, research, and service with global influence, addressing issues in Singapore, Asia, and worldwide. | Higher Education | 🇸🇬 Singapore | 18,124 |  |
| 74 | [Washington University in St. Louis](https://www.tamtam.ai/c/washington-university-in-st-louis) (washu.edu)<br>Private university focusing on teaching, research, and fostering knowledge creation while engaging with a diverse, multicultural community. | Higher Education | 🇺🇸 St. Louis | 18,070 | 1853 |
| 75 | [University of Illinois Chicago](https://www.tamtam.ai/c/university-of-illinois-chicago) (uic.edu)<br>A large university in Chicago with 33,000 students, 12,000 employees, 16 colleges, and a public medical center | Higher Education | 🇺🇸 Chicago | 17,943 | 1965 |
| 76 | [UNSW](https://www.tamtam.ai/c/unsw) (unsw.edu.au)<br>Offers over 300 undergraduate and 600 postgraduate programs, attracting diverse international students, part of leading research university networks. | Higher Education | 🇦🇺 Sydney | 17,791 | 1949 |
| 77 | [The University of Georgia](https://www.tamtam.ai/c/the-university-of-georgia) (uga.edu)<br>Public research university providing diverse educational programs, serving state-wide commitments, and preserving intellectual, cultural, and environmental heritage. | Higher Education | 🇺🇸 Athens | 17,591 |  |
| 78 | [Colorado State University](https://www.tamtam.ai/c/colorado-state-university) (colostate.edu)<br>Offers over 250 academic programs, conducts world-class research in various scientific fields, and provides top-ranked professional programs. | Higher Education | 🇺🇸 Fort Collins | 17,537 | 1870 |
| 79 | [Oregon Health & Science University](https://www.tamtam.ai/c/oregon-health-and-science-university) (ohsu.edu)<br>Research and education focused on disease understanding, treatment innovations, and training future health professionals across various medical fields. | Hospitals and Health Care | 🇺🇸 Portland | 17,535 | 1887 |
| 80 | [Northeastern University](https://www.tamtam.ai/c/northeastern-university) (northeastern.edu)<br>Global research university combining experiential learning with cooperative education, offering diverse programs and addressing health, security, and sustainability challenges worldwide. | Higher Education | 🇺🇸 Boston | 17,385 |  |
| 81 | [Northwestern University](https://www.tamtam.ai/c/northwestern-university) (northwestern.edu)<br>Premier research university offering innovative teaching, pioneering research, and diverse, collaborative environments across multiple campuses near Chicago and Qatar. | Higher Education | 🇺🇸 Evanston | 16,997 | 1851 |
| 82 | [Sapienza Università di Roma](https://www.tamtam.ai/c/sapienza-universita-di-roma) (uniroma1.it)<br>A prestigious, historic university in Rome with a diverse range of academic programs, research opportunities, and international exchange programs for students and academics | Research Services | 🇮🇹 Rome | 16,981 | 1303 |
| 83 | [University of Alabama at Birmingham](https://www.tamtam.ai/c/university-of-alabama-at-birmingham) (uab.edu)<br>Educates students, conducts research, provides patient care, fosters innovation, and engages with the community, significantly impacting the state's economy. | Higher Education | 🇺🇸 Birmingham | 16,963 | 1969 |
| 84 | [The University of Queensland](https://www.tamtam.ai/c/the-university-of-queensland) (alumni.uq.edu.au)<br>A globally renowned university with a commitment to knowledge leadership, quality teaching, and impactful research to drive positive change in society | Higher Education | 🇦🇺 Brisbane | 16,935 | 1909 |
| 85 | [University of Cincinnati](https://www.tamtam.ai/c/university-of-cincinnati) (uc.edu)<br>Public research university combining academic excellence with cooperative education, producing impactful discoveries and significant regional economic contributions. | Higher Education | 🇺🇸 Cincinnati | 16,727 | 1819 |
| 86 | [University of Virginia](https://www.tamtam.ai/c/university-of-virginia) (virginia.edu)<br>A renowned institution of higher learning, focused on meeting challenges, promoting access, and preparing citizen-leaders with empathy, integrity, and truth #GreatandGood | Higher Education | 🇺🇸 Charlottesville | 16,633 | 1819 |
| 87 | [Boston University School of Public Health](https://www.tamtam.ai/c/boston-university-school-of-public-health) (bu.edu)<br>Graduate education and research in public health fields, focusing on improving health of vulnerable populations through policy and practice. | Higher Education | 🇺🇸 Boston | 16,431 | 1976 |
| 88 | [Duke University](https://www.tamtam.ai/c/duke-university) (duke.edu)<br>Private research university offering undergraduate, graduate, and professional education with strong emphasis on research and academic excellence. | Higher Education | 🇺🇸 Durham | 16,307 | 1924 |
| 89 | [University of Alberta](https://www.tamtam.ai/c/university-of-alberta) (ualberta.ca)<br>Top Canadian university offering a wide range of programs in various disciplines, dedicated to using knowledge for the benefit of society | Higher Education | 🇨🇦 Edmonton | 16,185 | 1908 |
| 90 | [The University of Edinburgh](https://www.tamtam.ai/c/the-university-of-edinburgh) (ed.ac.uk)<br>A world-leading university offering globally recognized teaching, research, and innovation for over 425 years, unlocking the potential of students worldwide | Research Services | 🇬🇧 Edinburgh | 16,057 | 1583 |
| 91 | [The Ohio State University Wexner Medical Center](https://www.tamtam.ai/c/the-ohio-state-university-wexner-medical-center) (wexnermedical.osu.edu)<br>Academic medical center providing personalized patient care, medical education, research innovation, and extensive healthcare services across multiple specialties. | Hospitals and Health Care | 🇺🇸 Columbus | 15,993 | 1834 |
| 92 | [Geisinger](https://www.tamtam.ai/c/geisinger) (geisinger.org)<br>Healthcare organization with 13 hospital campuses, research centers, medical college, and health plan serving millions in Pennsylvania Committed to quality healthcare | Hospitals and Health Care | 🇺🇸 Danville | 15,962 | 1915 |
| 93 | [Boston University](https://www.tamtam.ai/c/boston-university) (bu.edu)<br>Leading private research and teaching institution with global presence. Inclusive, serving, and collaborating with Boston since 1869. | Higher Education | 🇺🇸 Boston | 15,935 | 1869 |
| 94 | [Florida State University](https://www.tamtam.ai/c/florida-state-university) (news.fsu.edu)<br>A prestigious academic institution offering nationally-ranked academics, renowned faculty, championship athletics, and a wide array of undergraduate and graduate programs | Higher Education | 🇺🇸 Tallahassee | 15,872 |  |
| 95 | [Medical University of South Carolina](https://www.tamtam.ai/c/medical-university-of-south-carolina) (musc.edu)<br>Public institution focused on educating healthcare professionals, conducting biomedical research, and providing comprehensive healthcare services in South Carolina and beyond. | Hospitals and Health Care | 🇺🇸 Charleston | 15,845 | 1824 |
| 96 | [University of Colorado Boulder](https://www.tamtam.ai/c/university-of-colorado-boulder) (colorado.edu)<br>A dynamic community of scholars and learners at a Colorado university, known for its spectacular campus and academic excellence | Higher Education | 🇺🇸 Boulder | 15,809 | 1876 |
| 97 | [University of Central Florida](https://www.tamtam.ai/c/university-of-central-florida) (ucf.edu)<br>Public university offering over 230 degree programs across multiple campuses and online, fostering community and industry engagement. | Higher Education | 🇺🇸 Orlando | 15,722 |  |
| 98 | [Emory University](https://www.tamtam.ai/c/emory-university) (emory.edu)<br>Top research university in Atlanta with strong liberal arts, professional schools, and a leading health care system focused on positive transformation. | Higher Education | 🇺🇸 Atlanta | 15,585 |  |
| 99 | [Virginia Tech](https://www.tamtam.ai/c/virginia-tech) (vt.edu)<br>Comprehensive university offering diverse degree programs, leading research initiatives, and driving technological innovation and economic growth regionally. | Higher Education | 🇺🇸 Blacksburg | 15,504 | 1872 |
| 100 | [University of Miami](https://www.tamtam.ai/c/university-of-miami) (welcome.miami.edu)<br>Offers diverse academic programs and majors for undergraduate and graduate students from around the world to pursue their passions and succeed | Higher Education | 🇺🇸 Coral Gables | 15,389 | 1925 |

## 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 Nov 12, 2026.

## More company lists in the world

- [The largest companies in the world](https://www.tamtam.ai/l/largest-companies-in-the-world) (415,122)
- [Multinational companies in the world](https://www.tamtam.ai/l/multinational-companies-in-the-world) (74,925)
- [Manufacturers in the world](https://www.tamtam.ai/l/manufacturers-in-the-world) (39,579)
- [Retail chains in the world](https://www.tamtam.ai/l/retail-chains-in-the-world) (35,499)
- [Companies with in-house R&D in the world](https://www.tamtam.ai/l/r-and-d-companies-in-the-world) (34,346)
- [Financial services firms in the world](https://www.tamtam.ai/l/financial-services-firms-in-the-world) (26,817)
- [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,737)
- [Education providers in the world](https://www.tamtam.ai/l/education-companies-in-the-world) (23,937)
- [IT Services and IT Consulting companies in the world](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-in-the-world) (23,571)
- [Critical infrastructure operators in the world](https://www.tamtam.ai/l/critical-infrastructure-operators-in-the-world) (23,312)
- [SaaS companies in the world](https://www.tamtam.ai/l/saas-companies-in-the-world) (22,459)
- [IT services companies in the world](https://www.tamtam.ai/l/it-services-companies-in-the-world) (20,934)
- [Software Development companies in the world](https://www.tamtam.ai/l/software-development-companies-in-the-world) (20,534)
- [Hardware manufacturers in the world](https://www.tamtam.ai/l/hardware-companies-in-the-world) (20,159)
- [Financial Services companies in the world](https://www.tamtam.ai/l/financial-services-companies-in-the-world) (19,958)
- [Companies with a mobile app in the world](https://www.tamtam.ai/l/companies-with-mobile-app-in-the-world) (18,922)
- [Public sector organisations in the world](https://www.tamtam.ai/l/public-sector-organisations-in-the-world) (18,493)
- [Healthcare providers in the world](https://www.tamtam.ai/l/healthcare-providers-in-the-world) (16,037)
- [Consulting firms in the world](https://www.tamtam.ai/l/consulting-firms-in-the-world) (16,009)
- [Family-owned companies in the world](https://www.tamtam.ai/l/family-owned-companies-in-the-world) (14,667)
- [Distributors and wholesalers in the world](https://www.tamtam.ai/l/distributors-and-wholesalers-in-the-world) (13,470)
- [Hospitals and Health Care companies in the world](https://www.tamtam.ai/l/hospitals-and-health-care-companies-in-the-world) (12,916)
- [Corporate groups and holding companies in the world](https://www.tamtam.ai/l/holding-companies-in-the-world) (12,864)
- [E-commerce companies in the world](https://www.tamtam.ai/l/ecommerce-companies-in-the-world) (12,013)

## The same list elsewhere

- [Research institutes in Europe](https://www.tamtam.ai/l/research-institutes-in-europe) (2,713)
- [Research institutes in North America](https://www.tamtam.ai/l/research-institutes-in-north-america) (1,216)
- [Research institutes in the United States](https://www.tamtam.ai/l/research-institutes-united-states) (983)
- [Research institutes in France](https://www.tamtam.ai/l/research-institutes-france) (965)
- [Research institutes in Asia](https://www.tamtam.ai/l/research-institutes-in-asia) (853)
- [Research institutes in Latin America](https://www.tamtam.ai/l/research-institutes-in-latin-america) (512)
- [Research institutes in India](https://www.tamtam.ai/l/research-institutes-india) (372)
- [Research institutes in Germany](https://www.tamtam.ai/l/research-institutes-germany) (324)
- [Research institutes in Brazil](https://www.tamtam.ai/l/research-institutes-brazil) (278)
- [Research institutes in the United Kingdom](https://www.tamtam.ai/l/research-institutes-united-kingdom) (216)
- [Research institutes in Africa](https://www.tamtam.ai/l/research-institutes-in-africa) (209)
- [Research institutes in Italy](https://www.tamtam.ai/l/research-institutes-italy) (188)
- [Research institutes in Spain](https://www.tamtam.ai/l/research-institutes-spain) (183)
- [Research institutes in the Middle East](https://www.tamtam.ai/l/research-institutes-in-the-middle-east) (179)
- [Research institutes in China](https://www.tamtam.ai/l/research-institutes-china) (163)
- [Research institutes in Canada](https://www.tamtam.ai/l/research-institutes-canada) (156)
- [Research institutes in Turkey](https://www.tamtam.ai/l/research-institutes-turkey) (116)
- [Research institutes in the Netherlands](https://www.tamtam.ai/l/research-institutes-netherlands) (102)
- [Research institutes in Switzerland](https://www.tamtam.ai/l/research-institutes-switzerland) (87)
- [Research institutes in Belgium](https://www.tamtam.ai/l/research-institutes-belgium) (80)
- [Research institutes in Poland](https://www.tamtam.ai/l/research-institutes-poland) (79)
- [Research institutes in Mexico](https://www.tamtam.ai/l/research-institutes-mexico) (77)
- [Research institutes in Portugal](https://www.tamtam.ai/l/research-institutes-portugal) (74)
- [Research institutes in Australia](https://www.tamtam.ai/l/research-institutes-australia) (70)

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Source: https://www.tamtam.ai/l/research-institutes-in-the-world