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The 100 largest companies in Bethesda

Tamtam tracks 133 companies headquartered in Bethesda. This list ranks the 100 largest by number of employees on LinkedIn, led by Marriott International, Sikorsky Aircraft Corporation and Marriott Hotels. Their median headcount is 539. Half of them were founded in 1988 or later.

๐Ÿ‡บ๐Ÿ‡ธ Bethesda100 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Marriott Internationalmarriott.com

Management and operation of approximately 9,000 hotels and resorts across more than 30 brands in 141 countries worldwide.

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 240,261 n/a
2
Sikorsky Aircraft Corporationlockheedmartin.com

Global security and aerospace company providing integrated solutions and predictive technologies to keep customers ahead of threats through advanced technology systems and services

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 115,000 1912
3
Marriott Hotelsmarriott-hotels.marriott.com

Global full-service hotels and resorts offering consistent guest experiences, functional room designs, international dining, gold standard event spaces, and extensive fitness facilities.

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 44,250 n/a
4
G.E.Igei.co

An insurance company with over 40,000 associates, offering rewarding careers in sales, customer service, claims, IT, leadership programs, and more

Insurance ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 40,000 1936
5
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.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 28,537 1887
6
Sheraton Hotels & Resortssheraton.marriott.com

Global hospitality services providing innovative travel connections across hundreds of communities in over seventy countries for both local visitors and international travelers.

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 21,082 1937
7
The Ritz-Carlton Hotel Company, L.L.C.ritzcarlton.com

Global hospitality provider delivering premium hotel services and community outreach programs guided by a rigorous corporate philosophy and commitment to gold standard excellence.

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 18,565 1983
8
Education Weekedweek.org

This company provides K-12 news, analysis, and opinion to empower individuals to make a difference in their community, while enforcing community guidelines for respectful interactions

Internet News ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 10,268 n/a
9
Westin Hotels & Resortswestin.marriott.com

Provides signature wellness programs across over two hundred global locations for travelers to eat, sleep, move, feel, work and play well.

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 8,533 n/a
10
Total Wine & Moretotalwine.com

Retailer offering extensive selection of wines, beers, and spirits with commitment to low prices and excellent customer service.

Retail ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 5,550 1991
11
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

Government Administration ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 5,247 n/a
12
DAIdai.com

A global development company with over 50 years of experience tackling social and economic challenges through innovative solutions in nearly 100 countries

International Trade and Development ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 3,623 1970
13
Precision Medicine Groupprecisionmedicinegrp.com

A company founded in 2012 focused on improving the drug development process through technology, data, human expertise, and strategic acquisitions

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 3,553 2012
14
Westatwestat.com

Westat provides professional services to improve outcomes in health, education, social policy, and transportation through research, data collection, clinical trials, evaluation, and communication

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 3,419 1963
15
Aloft Hotelsaloft-hotels.marriott.com

Aloft hotels offer unique, contemporary spaces with vibrant social scenes and innovative programming for the next generation of global travelers

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 3,090 2007
16
Renaissance Hotelsmarriott.com

Luxury hotel chain focused on unique design, neighborhood experiences, and local immersion, encouraging guests to discover hidden gems at each location

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 3,031 n/a
17
Management Leadership for Tomorrowmlt.org

Non-profit organization accelerating diverse talent pipelines through coaching, networking, and equity certifications, connecting top minority talent with leading corporations and business schools

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 2,663 2002
18
AC Hotels by Marriottac-hotels.marriott.com

AC Hotels by Marriott offers stylish, modern accommodations with a focus on essentials, European-inspired breakfast, flexible dining options, and a unique urban experience for travelers worldwide

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 2,570 1988
19
Gaylord Hotelsgaylordhotels.com

A leader in the meeting and resort hotels industry, offering guests convenient access to dining, spa, entertainment, shopping, activities, and meetings expertise

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 2,290 1977
20
Precision For Medicineprecisionformedicine.com

A global precision medicine clinical research organization improving therapeutics development with integrated clinical operations, laboratory expertise, and advanced data sciences

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 2,060 n/a
21
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

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 2,036 1983
22
Walter Reed National Military Medical Centerwalterreed.tricare.mil

Largest joint military medical center providing specialized healthcare, education, research, and operational readiness for wounded and ill military beneficiaries.

Hospitals and Health Care ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 1,920 n/a
23
Aledade, Inc.aledade.com

Support independent primary care practices with data analytics, care solutions, and value-based contracts to improve patient health and financial success.

Hospitals and Health Care ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 1,910 2014
24
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

Higher Education ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 1,893 1972
25
Admiral Security Servicesadmiralsecurity.com

Admiral Security Services offers professional armed and unarmed security officers, superior site management, and unwavering corporate support with high integrity and cost efficiency

Security and Investigations ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 1,765 1976
26
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

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 1,542 1949
27
Walker & Dunlopwalkerdunlop.com

Creating communities with ideas and capital, specializing in commercial real estate finance and advisory services for living, working, shopping, and playing

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 1,493 n/a
28
Suburban Hospitalhopkinsmedicine.org

A non-profit hospital in Maryland, offering cutting-edge medical services and distinguished stroke, trauma, cardiac, orthopedic, neuroscience, and oncology programs

Hospitals and Health Care ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 1,328 1943
29
Global Communitiesglobalcommunities.org

An international non-profit organization collaborates with communities worldwide to implement sustainable changes that enhance the lives of vulnerable populations through partnership and shared responsibility

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 1,211 1952
30
Cystic Fibrosis Foundationcff.org

Nonprofit dedicated to finding a cure and improving lives for those with cystic fibrosis through research, care, and advocacy for better health experiences and outcomes.

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 1,152 1955
31
Brivobrivo.com

A global leader in cloud-based access control technology for commercial real estate, multifamily residential buildings, and large enterprises

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 1,147 1999
32
Auberge Collectionaubergeresorts.com

Luxury hotel company with 25 resorts and 9 more in development, offering unique design, exceptional cuisine, spas, and top-notch service worldwide

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 1,096 1998
33
DARCARS Automotive Groupdarcars.com

A leading automotive group with 42 franchises across multiple states, consistently ranked on Forbes 500 list, emphasizing extraordinary customer satisfaction and community impact

Consumer Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 947 1977
34
Haagen Dazshaagen-dazs.com

A food & beverages company located in Bethesda, Maryland, offering high-quality products for indulgent cravings and sweet treats

Food and Beverage Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 893 n/a
35
Liquidity Servicesliquidityservices.com

Operates a global B2B e-commerce platform connecting corporate and government sellers with millions of buyers to trade surplus assets sustainably.

Transportation, Logistics, Supply Chain and Storage ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 892 1999
36
Victorvictorinsurance.com

A global managing general underwriter specializing in evaluating risks, underwriting policies, and providing outstanding service through exclusive carrier partnerships

Insurance ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 890 1957
37
CareMetx, LLCcaremetx.com

providing high-touch support and digital benefit investigation to accelerate patient initiation and adherence for specialty therapies

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 845 2011
38
citizenM hotelsmarriott.com

An integrated hotel brand catering to modern urban travellers, offering stylish, affordable accommodations in prime city locations with high profitability

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 831 2006
39
Envivaenvivabiomass.com

The company is the world's largest sustainable wood pellet producer, exporting to reduce greenhouse gas emissions in various sectors worldwide

Renewable Energy Power Generation ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 789 n/a
40
Centrus Energy Corp.centrusenergy.com

A trusted supplier of nuclear fuel and services, specializing in providing clean, affordable, and carbon-free electricity to utility customers worldwide

Nuclear Electric Power Generation ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 713 1998
41
The Luxury Collectionthe-luxury-collection.marriott.com

Curating unforgettable experiences in over 35 countries through a collection of 120+ unique luxury hotels, each offering transformative, story-worthy moments

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 712 n/a
42
AABBaabb.org

Global not-for-profit association focused on transfusion medicine and cellular therapies, improving health through standards, accreditation, and education for patient and donor care

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 699 1947
43
Collage Groupcollagegroup.com

Cultural intelligence company supporting US brands in leveraging culture to drive growth by providing consumer insights, data, tools, and best practices

Business Intelligence Platforms ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 684 2009
44
Offit Kurmanoffitkurman.com

Full-service law firm specializing in 30+ areas of practice, providing innovative counsel to businesses, individuals, and families to maximize and protect value

Law Practice ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 676 1987
45
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

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 670 n/a
46
JBG SMITHjbgsmith.com

A leading real estate company in the Washington, DC market, offering diverse mixed-use properties, leveraging experience, scale, and innovation to impact communities

Real Estate ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 668 1960
47
EagleBankeaglebankcorp.com

A local community business bank in Maryland, Northern Virginia, and DC, offering superior customer service and custom financial solutions for businesses and individuals

Banking ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 653 1998
48
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

Government Administration ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 631 1948
49
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

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 630 2001
50
NIH Clinical Center (CC)cc.nih.gov

Leading research hospital conducting clinical trials to develop treatments, therapies, and interventions for improved healthcare, receiving recognition for its public service efforts

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 539 1953
51
PDA - Parenteral Drug Associationpda.org

A global provider of science, technology, and regulatory information for the pharmaceutical and biopharmaceutical industry, committed to advancing science and regulation

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 520 1946
52
APHL - Association of Public Health Laboratoriesaphl.org

The company strengthens public health laboratory systems by detecting diseases, environmental contaminants, genetic disorders, and other health threats globally and in the US

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 517 1951
53
Bach to Rock: America's Music Schoolbachtorock.com

Music school offering unique method combining individual lessons with band instruction, jam sessions, Battles of the Bands, recording studios, and public concerts to cultivate musicianship

Primary and Secondary Education ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 514 2007
54
Meridian Senior Livingmeridiansenior.com

Meridian Senior Living provides personalized care and services for residents across the United States, focusing on improving quality of life

Hospitals and Health Care ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 498 2010
55
Employee Navigatoremployeenavigator.com

Simplify benefits and HR tasks for brokers and HR departments with an all-in-one solution, used by 50,000+ companies and 6,000,000+ employees

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 476 2008
56
National Institute of Neurological Disorders and Stroke (NINDS)ninds.nih.gov

The company provides medical advice and information on government transparency, while emphasizing user privacy and commenting guidelines on LinkedIn

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 473 1950
57
The Centers for Advanced Orthopaedicscfaortho.com

A leading provider of orthopaedic care in the Mid-Atlantic, offering personalized service, superior care, and a wide range of insurance options

Medical Practices ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 465 2013
58
ESIesi-dc.com

Professional services firm based in Bethesda, MD, serving Federal Government and other sectors since 1990 Offers exceptional value with expertise and capacity

Information Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 453 1990
59
ASHPashp.org

Leading association of pharmacy professionals in the US, offering education, advocacy, accreditation, and resources for pharmacists, student pharmacists, and pharmacy technicians across all settings

Hospitals and Health Care ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 447 1942
60
National Institute on Aging (NIA)nia.nih.gov

Government agency leading research on aging, Alzheimer's disease, and related dementias Engages on Twitter, Facebook, and YouTube for updates

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 425 1974
61
Get Wellgetwellnetwork.com

Specializing in digital patient engagement, they aim to improve healthcare outcomes by providing personalized technology solutions for hospitals and health systems

Hospitals and Health Care ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 416 2000
62
U.S. Consumer Product Safety Commissioncpsc.gov

An organization dedicated to protecting the public from risks of injury or death from consumer products through regulation and safety measures

Public Safety ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 412 1972
63
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.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 388 n/a
64
Red Coats, Inc.redcoats.com

A leading custodial service company, providing professional cleaning services to millions of square feet of residential, commercial, industrial, and institutional spaces daily

Facilities Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 384 1960
65
National Human Genome Research Institute (NHGRI)genome.gov

NHGRI drives genomics research at NIH, conducting and funding world-class research, training experts, and collaborating to accelerate scientific and medical breakthroughs

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 382 1989
66
MidCap Financialmidcapfinancial.com

Provides senior debt financing solutions to middle-market companies across various industries, managing approximately $60 billion in commitments.

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 379 2008
67
Wellness Corporate Solutions, LLClabcorp.com

Provider of comprehensive well-being solutions and insights, including COVID-19 return to work solutions, biometric screenings, health coaching, and analytics for employers and health consumers

Wellness and Fitness Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 377 2004
68
PPDโ„ข Evideraโ„ข Solutionsppd.com

Evidera offers evidence-based solutions for demonstrating the real-world effectiveness, safety, and value of biopharmaceutical products from early development to loss of exclusivity

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 373 2013
69
Marketbridgemarketbridge.com

Global team providing unified Go-to-Market systems through strategy, AI, creativity, and measurement for Fortune 50 companies and venture-backed brands across multiple sectors.

Marketing Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 371 1991
70
HiLabshilabs.com

This company provides technology solutions for health plans to optimize member experiences, increase efficiency, and convert data into actionable insights

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 349 2014
71
Federal Occupational Healthhhs.gov

An established agency offering comprehensive administrative services to the US government, including finance, procurement, real estate, logistics, and occupational health

Government Administration ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 346 1946
72
Host Hotels & Resortshosthotels.com

Owns luxury and upper-upscale hotels as a lodging real estate investment trust in top U.S. markets, focusing on responsible asset management.

Real Estate ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 342 1993
73
Spatial Front, Incspatialfront.com

Delivering IT solutions and business support services with strategic planning, precise execution, and commitment to excellence Certified in SBA 8(a), WOSB, CMMI L3, and ISO 9001

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 337 2008
74
Eunice Kennedy Shriverย National Institute of Child Health and Human Development (NICHD)nichd.nih.gov

This organization conducts and supports research on various aspects of health and development in the United States and worldwide Visit their website for more information

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 336 1962
75
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)niddk.nih.gov

Supports medical research, grants to universities, government scientists conducting research on chronic diseases, research training, and provides science-based information to patients and professionals

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 334 1950
76
U.S. Financial Technologyusfintech.com

This company operates a mortgage securitization platform for Fannie Mae and Freddie Mac, providing issuance, administration, disclosure, and tax services

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 330 2014
77
ISNisncorp.com

A nationwide provider of specialized professional services to Federal government agencies, focused on quality, timeliness, integrity, and eliminating fraud, waste, and abuse through technology-based solutions

Professional Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 329 1980
78
Technical Resources International, Inc.tech-res.com

A certified Hispanic woman-owned organization providing product development support services to the global drug, biologic, vaccine, medical device, and health sector communities

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 318 1979
79
GIAC Certificationsgiac.org

Offers over 30 information security certifications, validating hands-on skills for professionals, practitioners, and developers across offensive, defensive, management, audit, forensics, and software security.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 318 1999
80
Manhattan Strategy Groupmanhattanstrategy.com

A boutique research and consulting firm specializing in helping government and commercial clients achieve performance excellence through custom solutions and expert analysis

Business Consulting and Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 313 2001
81
RE/MAX Realty Servicesrealtyserviceexperts.com

A real estate company dedicated to providing high-quality service, achieving excellent results, and offering a variety of convenient services to agents and clients

Real Estate ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 264 1992
82
GRSigrsi.com

Professional services and technology innovations company offering agile solutions in areas such as Agile Transformation, Cloud Development, and DevSecOps for government and defense sectors

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 240 2000
83
Democracy Internationaldemocracyinternational.com

This company supports active citizens, responsive governments, and engaged civil society to promote democracy, human rights, and governance worldwide

International Trade and Development ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 225 2003
84
Datawatch Systemsdatawatchsystems.com

Provides managed access control and emergency management solutions, remotely monitoring doors and credentials to protect properties and people nationwide.

Security and Investigations ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 222 1981
85
GoIndustry DoveBidgo-dove.com

Global leader in surplus asset management, industrial auctions, and valuation services, helping businesses optimize ROI through asset sales, management, and sustainability solutions

Business Supplies & Equipment ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 218 1999
86
B. F. Saul Company Hospitality Groupbfsaulhotels.com

Hospitality subsidiary of a private real estate and banking concern, operating a portfolio of branded hotels and conference facilities in three states

Hospitality ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 212 1892
87
Bernstein Management Corporationbmcproperties.com

Real estate management, investment, and development company with a portfolio of 80+ properties in Washington DC, Maryland, and Virginia Prioritizing integrity, service, and innovation

Real Estate ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 202 1953
88
Rapid Financerapidfinance.com

Provides fast, flexible online funding solutions to small and medium-sized businesses and enterprise solutions to help lenders serve small business borrowers.

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 200 2005
89
Chevy Chase Trustchevychasetrust.com

Independent investment management firm providing personalized financial planning and diversified portfolios to individuals, families, and select institutions, with a focus on maximizing client wealth

Investment Management ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 192 1999
90
Stone Ridge School of the Sacred Heartstoneridgeschool.org

A Catholic, college preparatory school for girls with a co-ed early childhood program, part of a global network promoting faith, academics, social awareness, and community

Education Administration Programs ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 186 1923
91
ORCIDlinktr.ee

Facilitating transparent connections between researchers, their contributions, and affiliations through unique identifiers and APIs, supported by a global non-profit organization

Information Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 184 2010
92
Advanced Research Projects Agency for Health (ARPA-H)arpa-h.gov

A government agency focused on solving complex health challenges through innovative research programs, aiming to empower all Americans to achieve optimal health

Government Administration ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 178 2022
93
Greysteelgreysteel.com

Leading commercial real estate advisory firm serving private, middle-market, and institutional investors, offering tailored solutions through deep market intelligence and disciplined approach.

Real Estate ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 177 2012
94
elite personnelelitepersonnel.com

A full-service recruitment firm with over 35 years of experience providing top-notch personnel for Direct Hire, Temp-to-Hire, Temporary, and Contract staff

Staffing and Recruiting ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 175 1988
95
American Gastroenterological Association (AGA)gastro.org

A global organization representing over 16,000 members in the field of gastroenterology, focusing on practice, research, and education in the area

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 174 1897
96
ProSharesproshares.com

A leading provider of ETFs, offering innovative products to manage risk and enhance returns since 2006 Visit their website for more information

Investment Management ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 173 1999
97
Rochambeau, The French International Schoolrochambeau.org

A bilingual, bicultural school in Bethesda MD with 3 campuses, educating students from PreK to 12th grade with a strong academic focus on French National Curriculum

Education Administration Programs ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 171 1955
98
Imagination Stage, Inc.imaginationstage.org

A multi-disciplinary theatre arts organization offering professional shows, classes, summer camps, and teacher training focusing on inclusivity and accessibility for children

Performing Arts ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 162 1979
99
Healthy Directionshealthydirections.com

Direct-to-consumer retailer and health publisher offering doctor-formulated supplements and skincare products from respected integrative health experts

Wellness and Fitness Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 159 1974
100
Center for Scientific Review (CSR)csr.nih.gov

The company serves as the gateway for NIH grant applications, organizing peer review groups to evaluate research grant applications for scientific merit

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 155 1946

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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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