# Research institutes headquartered in North America

Tamtam tracks 1,216 research institutes headquartered in North America. 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 19,275. Half of them were founded in 1880 or later. The most common headquarters are New York (5), Boston (4) and Atlanta (3).

This selection of North American research institutes primarily comprises large public and private universities. These institutions are dedicated to advancing knowledge, providing education, and conducting research across various fields. Examples include the University of California, educating top minds and driving innovation, Harvard University, focused on teaching, learning, and research, and the University of Michigan, dedicated to excellence in knowledge and leadership development. Also present are major healthcare systems like Northwell Health, the largest New York healthcare system, and Mount Sinai Health System, which conducts transformative research.

A notable pattern among these organizations is the strong representation of higher education institutions, with many founded in the 19th century, such as the University of Michigan (1817) and Penn State University (1855). While universities are spread across the continent, there is a concentration of major healthcare research in New York, with Northwell Health, Mount Sinai Health System, and NYU Langone Health all headquartered there. NASA, founded in 1958, stands out as a government agency focused on space exploration and aeronautics research.

🌍 North America · 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 | [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 |
| 5 | [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 |  |
| 6 | [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 |  |
| 7 | [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 |
| 8 | [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 |  |
| 9 | [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 |  |
| 10 | [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 |
| 11 | [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 |
| 12 | [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 |
| 13 | [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 |
| 14 | [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 |  |
| 15 | [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 |
| 16 | [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 |
| 17 | [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 |  |
| 18 | [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 |  |
| 19 | [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 |
| 20 | [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 |
| 21 | [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 |  |
| 22 | [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 |  |
| 23 | [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 |
| 24 | [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 |
| 25 | [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 |
| 26 | [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 |  |
| 27 | [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 |  |
| 28 | [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 |
| 29 | [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 |
| 30 | [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 |
| 31 | [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 |
| 32 | [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 |
| 33 | [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 |
| 34 | [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 |
| 35 | [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 |  |
| 36 | [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 |  |
| 37 | [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 |
| 38 | [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 |
| 39 | [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 |  |
| 40 | [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 |
| 41 | [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 |  |
| 42 | [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 |
| 43 | [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 |  |
| 44 | [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 |
| 45 | [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 |
| 46 | [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 |
| 47 | [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 |  |
| 48 | [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 |
| 49 | [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 |
| 50 | [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 |
| 51 | [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 |
| 52 | [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 |  |
| 53 | [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 |
| 54 | [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 |
| 55 | [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 |  |
| 56 | [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 |
| 57 | [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 |
| 58 | [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 |  |
| 59 | [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 |
| 60 | [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 |
| 61 | [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 |  |
| 62 | [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 |
| 63 | [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 |
| 64 | [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 |
| 65 | [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 |
| 66 | [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 |
| 67 | [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 |
| 68 | [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 |
| 69 | [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 |
| 70 | [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 |
| 71 | [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 |
| 72 | [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 |  |
| 73 | [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 |
| 74 | [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 |
| 75 | [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 |  |
| 76 | [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 |  |
| 77 | [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 |
| 78 | [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 |
| 79 | [McGill University](https://www.tamtam.ai/c/mcgill-university) (mcgill.ca)<br>Leading research-intensive university with diverse international students, multiple campuses, extensive programs, and partnerships with teaching hospitals for healthcare education. | Higher Education | 🇨🇦 Montreal | 15,235 | 1821 |
| 80 | [University of Missouri-Columbia](https://www.tamtam.ai/c/university-of-missouri-columbia) (missouri.edu)<br>State-supported research university providing education, advancing arts, sciences, and professions, focusing on public service and economic development. | Higher Education | 🇺🇸 Columbia | 14,879 |  |
| 81 | [University of Calgary](https://www.tamtam.ai/c/university-of-calgary) (ucalgary.ca)<br>A leading Canadian university in Calgary focused on becoming one of the top five research universities, emphasizing research, teaching, and community engagement | Higher Education | 🇨🇦 Calgary | 14,818 | 1966 |
| 82 | [UC Irvine](https://www.tamtam.ai/c/uc-irvine) (uci.edu)<br>A top public research university in Southern California committed to rigorous academics, cutting-edge research, and leadership development with global impact | Higher Education | 🇺🇸 Irvine | 14,695 | 1965 |
| 83 | [University of Iowa](https://www.tamtam.ai/c/university-of-iowa) (jobs.uiowa.edu)<br>Top public research university in Iowa with diverse community and advanced technology, offering cultural, educational, and recreational activities on a scenic campus | Higher Education | 🇺🇸 Iowa City | 14,628 | 1847 |
| 84 | [Oregon State University](https://www.tamtam.ai/c/oregon-state-university) (oregonstate.edu)<br>Public university offering diverse academic programs, conducting research, and fostering community engagement with a strong identity as Beaver Nation. | Higher Education | 🇺🇸 Corvallis | 14,096 | 1868 |
| 85 | [University of Connecticut](https://www.tamtam.ai/c/university-of-connecticut) (uconn.edu)<br>A renowned public university with 32,000 students, offering a variety of undergraduate, graduate, and professional degree programs across multiple schools and colleges | Higher Education | 🇺🇸 Storrs | 14,027 |  |
| 86 | [Los Alamos National Laboratory](https://www.tamtam.ai/c/los-alamos-national-laboratory) (lanl.gov)<br>Multidisciplinary research institution focused on national security, nuclear stockpile safety, and advanced science in space, energy, computing, medicine, and nanotechnology. | Research Services | 🇺🇸 Los Alamos | 13,603 | 1943 |
| 87 | [Baylor College of Medicine](https://www.tamtam.ai/c/baylor-college-of-medicine) (bcm.edu)<br>Health sciences university in Texas Medical Center, conducting research, educating medical professionals, and providing healthcare locally and globally | Higher Education | 🇺🇸 Houston | 13,584 | 1900 |
| 88 | [Oklahoma State University](https://www.tamtam.ai/c/oklahoma-state-university) (go.okstate.edu)<br>Delivering education, research, and community engagement in alignment with a land-grant mission for over a century | Higher Education | 🇺🇸 Stillwater | 13,451 | 1890 |
| 89 | [The University of Alabama](https://www.tamtam.ai/c/the-university-of-alabama) (ua.edu)<br>Public university focused on teaching, research, and service, providing a creative environment for students and scholars to excel. | Higher Education | 🇺🇸 Tuscaloosa | 13,215 | 1831 |
| 90 | [University of Bristol](https://www.tamtam.ai/c/university-of-bristol) (bristol.ac.uk)<br>A globally renowned university focusing on cutting-edge research, educating future leaders, and addressing key global issues, ranked among the top universities worldwide | Higher Education | 🇺🇸 Bristol | 13,175 |  |
| 91 | [McMaster University](https://www.tamtam.ai/c/mcmaster-university) (mcmaster.ca)<br>Leading Canadian university known for innovation in education and research, serving 30,000 students and a global alumni network. | Higher Education | 🇨🇦 Hamilton | 13,160 | 1887 |
| 92 | [Temple University](https://www.tamtam.ai/c/temple-university) (temple.edu)<br>A top-tier research institution in a vibrant city, offering diverse degree programs to prepare future leaders for impactful careers | Higher Education | 🇺🇸 Philadelphia | 13,124 | 1884 |
| 93 | [University of Notre Dame](https://www.tamtam.ai/c/university-of-notre-dame) (nd.edu)<br>Provides undergraduate and graduate education with a strong Catholic mission, emphasizing research and academic excellence in the United States. | Higher Education | 🇺🇸 Notre Dame | 13,079 | 1842 |
| 94 | [University of North Texas](https://www.tamtam.ai/c/university-of-north-texas) (unt.edu)<br>A leading public research university with a focus on creativity, innovation, entrepreneurship, offering a wide range of academic programs and degrees | Higher Education | 🇺🇸 Denton | 12,980 | 1890 |
| 95 | [McCausland College of Arts and Sciences](https://www.tamtam.ai/c/mccausland-college-of-arts-and-sciences) (sc.edu)<br>Official university page for College of Arts and Sciences at University of South Carolina Connect with alumni, faculty, and staff for updates | Higher Education | 🇺🇸 Columbia | 12,889 | 1801 |
| 96 | [Florida International University](https://www.tamtam.ai/c/florida-international-university) (fiu.edu)<br>Public research university in Miami offering bachelor's, master's, doctoral degrees on campus and online, focusing on community impact and innovation. | Higher Education | 🇺🇸 Miami | 12,770 | 1965 |
| 97 | [Vanderbilt University](https://www.tamtam.ai/c/vanderbilt-university) (vanderbilt.edu)<br>Top-ranked university in Nashville focusing on teaching, research, collaboration, diversity, and providing diverse career opportunities across multiple fields. | Higher Education | 🇺🇸 Nashville | 12,700 | 1873 |
| 98 | [Georgia State University](https://www.tamtam.ai/c/georgia-state-university) (gsu.edu)<br>Educates over 51,000 students across 250+ degree programs, specializing in urban research and student success initiatives with high graduation rates. | Higher Education | 🇺🇸 Atlanta | 12,700 | 1913 |
| 99 | [University of Houston](https://www.tamtam.ai/c/university-of-houston) (uh.edu)<br>A public research university in Houston, offering over 250 academic programs to 46,000 students on campus and online, with 10,000 degrees awarded annually | Higher Education | 🇺🇸 Houston | 12,589 | 1927 |
| 100 | [Nationwide Children's Hospital](https://www.tamtam.ai/c/nationwide-children-s-hospital) (nationwidechildrens.org)<br>Provides advanced pediatric medical care, conducts leading research, trains specialists, and offers specialized programs in heart, cancer, and neonatology. | Hospitals and Health Care | 🇺🇸 Columbus | 12,575 | 1892 |

## 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 North America

- [The largest companies in North America](https://www.tamtam.ai/l/largest-companies-in-north-america) (119,523)
- [Multinational companies in North America](https://www.tamtam.ai/l/multinational-companies-in-north-america) (18,660)
- [Manufacturers in North America](https://www.tamtam.ai/l/manufacturers-in-north-america) (10,136)
- [Education providers in North America](https://www.tamtam.ai/l/education-companies-in-north-america) (8,464)
- [Retail chains in North America](https://www.tamtam.ai/l/retail-chains-in-north-america) (8,234)
- [Financial services firms in North America](https://www.tamtam.ai/l/financial-services-firms-in-north-america) (7,764)
- [Companies with in-house R&D in North America](https://www.tamtam.ai/l/r-and-d-companies-in-north-america) (7,619)
- [Critical infrastructure operators in North America](https://www.tamtam.ai/l/critical-infrastructure-operators-in-north-america) (6,768)
- [Hardware manufacturers in North America](https://www.tamtam.ai/l/hardware-companies-in-north-america) (5,985)
- [Financial Services companies in North America](https://www.tamtam.ai/l/financial-services-companies-in-north-america) (5,616)
- [Public sector organisations in North America](https://www.tamtam.ai/l/public-sector-organisations-in-north-america) (5,041)
- [Higher Education companies in North America](https://www.tamtam.ai/l/higher-education-companies-in-north-america) (3,953)
- [Construction companies in North America](https://www.tamtam.ai/l/construction-companies-in-north-america) (3,792)
- [Energy companies in North America](https://www.tamtam.ai/l/energy-companies-in-north-america) (3,543)
- [Publicly traded companies in North America](https://www.tamtam.ai/l/publicly-traded-companies-in-north-america) (3,538)
- [Family-owned companies in North America](https://www.tamtam.ai/l/family-owned-companies-in-north-america) (3,387)
- [Corporate groups and holding companies in North America](https://www.tamtam.ai/l/holding-companies-in-north-america) (3,311)
- [Distributors and wholesalers in North America](https://www.tamtam.ai/l/distributors-and-wholesalers-in-north-america) (3,208)
- [Hotel and hospitality groups in North America](https://www.tamtam.ai/l/hospitality-groups-in-north-america) (3,148)
- [E-commerce companies in North America](https://www.tamtam.ai/l/ecommerce-companies-in-north-america) (2,944)
- [Logistics companies in North America](https://www.tamtam.ai/l/logistics-companies-in-north-america) (2,701)
- [Insurance companies in North America](https://www.tamtam.ai/l/insurance-companies-in-north-america) (2,622)
- [Government Administration companies in North America](https://www.tamtam.ai/l/government-administration-companies-in-north-america) (2,495)
- [Retail companies in North America](https://www.tamtam.ai/l/retail-companies-in-north-america) (2,407)

## The same list elsewhere

- [Research institutes in the world](https://www.tamtam.ai/l/research-institutes-in-the-world) (5,686)
- [Research institutes in the United States](https://www.tamtam.ai/l/research-institutes-united-states) (983)
- [Research institutes in Canada](https://www.tamtam.ai/l/research-institutes-canada) (156)
- [Research institutes in Mexico](https://www.tamtam.ai/l/research-institutes-mexico) (77)

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Source: https://www.tamtam.ai/l/research-institutes-in-north-america