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Top 50 multinational companies in Maryland

Tamtam tracks 216 multinational companies headquartered in Maryland. This list ranks the 50 largest by number of employees on LinkedIn, led by Marriott International, Marriott Hotels and TEKsystems. Their median headcount is 4,014. Half of them were founded in 1980 or later. The most common headquarters are Bethesda (11), Hanover (6) and Rockville (6).

馃嚭馃嚫 Maryland50 companiesUpdated Nov 11, 2026

These multinational companies in Maryland operate primarily in hospitality, IT services, and food manufacturing. Notable examples include Marriott International, managing approximately 9,000 hotels worldwide; TEKsystems, a global solutions provider accelerating business transformation; McCormick & Company, a global leader in flavor manufacturing; and T. Rowe Price, a global asset management organization. The companies listed are generally large groups, with several employing tens of thousands of individuals.

A significant concentration of hospitality companies, including Marriott International, Marriott Hotels, Sheraton Hotels & Resorts, The Ritz-Carlton Hotel Company, L.L.C., and Westin Hotels & Resorts, are headquartered in Bethesda. This indicates a strong regional presence for this sector within Maryland.

#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 馃嚭馃嚫 Bethesda 240,261 n/a
2
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 馃嚭馃嚫 Bethesda 44,250 n/a
3
TEKsystemsteksystems.com

Global solutions provider specializing in accelerating business transformation through resolving technology, business, and talent challenges for Fortune 500 organizations

IT Services and IT Consulting 馃嚭馃嚫 Hanover 28,131 1983
4
Goodwill Industries Internationalgoodwill.org

nonprofit organization providing education, training, and career services to disadvantaged individuals and people with disabilities for empowerment.

Non-profit Organizations 馃嚭馃嚫 Rockville 24,004 1902
5
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 馃嚭馃嚫 Bethesda 21,082 1937
6
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 馃嚭馃嚫 Bethesda 18,565 1983
7
The Johns Hopkins Universityjhu.edu

Leading research university offering diverse academic programs across multiple campuses, fostering innovation and improving lives through education and discovery.

Higher Education 馃嚭馃嚫 Baltimore 18,221 n/a
8
Infinite Computer Solutionsinfinite.com

Global provider of technology modernization, digital engineering, and AI-driven IT services delivering tailored solutions across multiple industries worldwide.

IT Services and IT Consulting 馃嚭馃嚫 Rockville 14,901 2001
9
McCormick & Companymccormickcorporation.com

A global leader in flavor, McCormick manufactures and distributes spices, seasonings, and other flavorful products to the food industry worldwide

Food and Beverage Manufacturing 馃嚭馃嚫 Hunt Valley 14,000 1889
10
Under Armourunderarmour.com

Design and develop innovative performance apparel, footwear, and gear focused on enhancing athletes' training, competition, and recovery experiences.

Retail Apparel and Fashion 馃嚭馃嚫 Baltimore 13,004 1996
11
T. Rowe Pricetroweprice.com

Global asset management organization providing equity, fixed income, and multi-asset solutions through rigorous research and active investing for individuals, advisors, and institutional clients.

Financial Services 馃嚭馃嚫 Baltimore 11,000 1937
12
Cienaciena.com

Global leader in optical and routing systems, services, and automation software, building adaptive networks to meet digital demands with innovation and collaboration

Telecommunications 馃嚭馃嚫 Hanover 10,652 1992
13
United States Department of the Navynavy.mil

This organization is part of the Navy and is involved in activities related to naval operations, defense, and national security

Defense and Space Manufacturing 馃嚭馃嚫 Patuxent River 9,503 1950
14
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 馃嚭馃嚫 Bethesda 8,533 n/a
15
Perdue Farmscorporate.perduefarms.com

A fourth-generation, family-owned US food and agriculture business offering premium protein products through responsible practices and a focus on animal welfare

Food and Beverage Manufacturing 馃嚭馃嚫 Salisbury 8,392 1920
16
Catholic Relief Servicescrs.org

An international humanitarian agency providing assistance to people in need in over 100 countries, with high efficiency and transparency

Non-profit Organizations 馃嚭馃嚫 Baltimore 7,845 1943
17
Naval Air Systems Command (NAVAIR)navair.navy.mil

Delivers timely, effective, and sustainable naval aviation capabilities to ensure warfighter dominance and mission success while prioritizing safety and national defense objectives.

Defense and Space Manufacturing 馃嚭馃嚫 Patuxent River 7,687 n/a
18
Comfort Innchoicehotels.com

This company offers modern, welcoming hotels with amenities to help guests feel refreshed and ready to take on the day, focusing on owner success and growth

Hospitality 馃嚭馃嚫 Rockville 6,996 n/a
19
Actalentactalentservices.com

Actalent specializes in providing scalable talent solutions and services globally, focusing on engineering, sciences, and professional development to drive value for clients

Business Consulting and Services 馃嚭馃嚫 Hanover 6,572 n/a
20
Senior Helpersseniorhelpers.com

Provider of in-home senior assistance with specialized training in Alzheimer's, Dementia, and Parkinson's care Recognized as a great place to work

Home Health Care Services 馃嚭馃嚫 Towson 6,175 2002
21
Merklemerkle.com

A leading CXM company specializing in delivering personalized customer experiences through data, technology, analytics, and marketing strategies for Fortune 1000 companies

Business Consulting and Services 馃嚭馃嚫 Columbia 5,624 n/a
22
ESAB Corporationesabcorporation.com

A global leader in innovative solutions for fabrication and specialty gas control markets, focusing on continuous improvement and empowering associates worldwide

Machinery Manufacturing 馃嚭馃嚫 North Bethesda 5,556 n/a
23
W. R. Gracegrace.com

Supplies catalysts, engineered materials, process technologies, fine chemicals. Industries enhance modern life. Manufactures renewable fuels, pharmaceuticals, food packaging better, faster, smarter.

Chemical Manufacturing 馃嚭馃嚫 Columbia 4,244 n/a
24
Jhpiegojhpiego.org

International non-profit health organization, affiliated with Johns Hopkins University, focuses on gynecology and obstetrics, providing education and training for better health outcomes.

Non-profit Organizations 馃嚭馃嚫 Baltimore 4,139 1973
25
ISS | Institutional Shareholder Servicesiss-stoxx.com

A global provider of data, analytics, and insights for investors and companies, specializing in corporate governance, responsible investment solutions, and market intelligence

Financial Services 馃嚭馃嚫 Rockville 4,014 n/a

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26
Piedmont Airlinespiedmont-airlines.com

An airline with a long history of providing scheduled service to over 70 cities in the eastern US and Canada Operating the ERJ-145 aircraft

Airlines and Aviation 馃嚭馃嚫 Salisbury 3,883 1931
27
ESABesab.com

A global leader in welding technology, offering equipment, consumables, automation, and cutting systems to improve productivity and reduce costs for manufacturers worldwide

Machinery Manufacturing 馃嚭馃嚫 North Bethesda 3,785 1904
28
Abt Globalabtglobal.com

Global leader in research, evaluation, and program implementation addressing health, education, environment, agriculture, housing, and data collection challenges worldwide.

Professional Services 馃嚭馃嚫 Rockville 3,748 n/a
29
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 馃嚭馃嚫 Bethesda 3,623 1970
30
Allegis Groupallegisgroup.com

Providing comprehensive talent solutions worldwide through specialized companies, connecting people with opportunities and solving workforce challenges for business success.

Staffing and Recruiting 馃嚭馃嚫 Hanover 3,570 1983
31
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 馃嚭馃嚫 Bethesda 3,553 2012
32
Hugheshughes.com

Provides broadband equipment, services, and network operations to millions of consumers, businesses, and governments worldwide via satellite and multi-transport technologies.

Telecommunications 馃嚭馃嚫 Germantown 3,209 1971
33
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 馃嚭馃嚫 Bethesda 3,090 2007
34
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 馃嚭馃嚫 Bethesda 3,031 n/a
35
Allegis Global Solutionsallegisglobalsolutions.com

Global workforce solutions provider specializing in workforce design, management, consulting, and procurement to transform organizations and enhance competitive advantage.

Staffing and Recruiting 馃嚭馃嚫 Hanover 3,021 2001
36
Aston Carterastoncarter.com

Providing specialized talent solutions in accounting, finance, HR, procurement, and supply chain to global clients including Fortune 500 companies.

Staffing and Recruiting 馃嚭馃嚫 Hanover 2,699 1997
37
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 馃嚭馃嚫 Bethesda 2,570 1988
38
Comfort Suiteschoicehotels.com

This company offers modern and comfortable hotel accommodations with over 1,600 properties in the US and 2,100 internationally, focusing on enabling owner success

Hospitality 馃嚭馃嚫 Rockville 2,550 n/a
39
The Cleaning Authoritythecleaningauthority.com

A valuable home cleaning franchise opportunity for forward-thinking entrepreneurs to invest in themselves and build a rewarding business for the future

Consumer Services 馃嚭馃嚫 Columbia 2,492 1977
40
Prometricprometric.com

Global provider of secure test development and delivery solutions supporting test-takers worldwide to advance their careers through accessible testing services

IT Services and IT Consulting 馃嚭馃嚫 White Marsh 2,467 n/a
41
Health Primehpiinc.com

Physician-owned company providing practice management solutions to help physicians focus on patients by minimizing paperwork and embracing evolving healthcare technology

IT Services and IT Consulting 馃嚭馃嚫 National Harbor 2,415 2003
42
Crisis24crisis24.com

Integrated risk management, crisis response, consulting, and global protective solutions firm, providing specialized services, security, and technology powered by AI worldwide

Security and Investigations 馃嚭馃嚫 Annapolis 2,363 n/a
43
Tenabletenable.com

Exposes and closes cybersecurity gaps, unifies security visibility, insight, and action across the attack surface for organizations globally.

Computer and Network Security 馃嚭馃嚫 Columbia 2,361 n/a
44
SEVENTH DAY ADVENTIST CHURCHadventist.org

A religious denomination based in Silver Spring, MD, focused on Seventh-day Adventist beliefs and practices

Religious Institutions 馃嚭馃嚫 Silver Spring 2,337 1863
45
University of Maryland School of Medicinemedschool.umaryland.edu

Leading biomedical research institution with top-tier faculty and extensive global reach, dedicated to advancing innovative research in virology, genomics, and global health

Research Services 馃嚭馃嚫 2,179 1807
46
Markenmarken.com

Experts orchestrate millions of temperature-controlled shipments annually for drug supply, advanced therapies, and medical devices, prioritizing patient needs and quality.

Transportation, Logistics, Supply Chain and Storage 馃嚭馃嚫 Durham 2,175 1980
47
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 馃嚭馃嚫 Bethesda 2,060 n/a
48
ADRA Internationaladra.org

ADRA provides unconditional assistance to families worldwide by offering essentials, livelihood support, health care, education, disaster relief, and empowerment programs

Non-profit Organizations 馃嚭馃嚫 Silver Spring 2,018 1983
49
Choice Hotels Internationalchoicehotels.com

Global lodging franchisor managing 22 brands across upscale and midscale segments, supporting thousands of hotels and offering a rewards program for travelers.

Hospitality 馃嚭馃嚫 North Bethesda 2,000 n/a
50
Apex Tool Group, LLCapextoolgroup.com

Global company promoting diversity, inclusion, and respect to create a positive, safe, and inspiring work environment for associates.

Manufacturing 馃嚭馃嚫 Sparks Glencoe 1,971 2010

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

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