# 100 leading multinational companies in Virginia

Tamtam tracks 396 multinational companies headquartered in Virginia. This list ranks the 100 largest by number of employees on LinkedIn, led by US Army, Hilton and RTX. Their median headcount is 4,954. Half of them were founded in 1973 or later. The most common headquarters are Arlington (20), McLean (17) and Reston (9).

The companies listed are large multinational entities, predominantly operating in defense, aerospace, and IT services. Many also have a significant presence in hospitality and manufacturing. For instance, the US Army focuses on land dominance, Hilton manages global hospitality brands, RTX and Boeing specialize in aerospace and defense, and DXC Technology assists global companies with IT modernization. Northrop Grumman develops advanced technology solutions, while Mars is a multinational conglomerate in food and beverage.

A notable pattern among these companies is their concentration in the Northern Virginia area, particularly in cities like Arlington, McLean, and Falls Church. This geographic clustering highlights the region's role as a hub for large organizations, especially those with ties to government contracts and advanced technological development.

🇺🇸 Virginia · 100 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [US Army](https://www.tamtam.ai/c/us-army) (usarmybasic.com)<br>Providing prompt, sustained land dominance across full military operations spectrum, supporting combatant commanders in national defense and warfare. | Armed Forces | 🇺🇸 Arlington | 367,627 | 1775 |
| 2 | [Hilton](https://www.tamtam.ai/c/hilton) (hilton.com)<br>Leading hospitality group managing twenty-seven world-class brands across nine thousand global properties, providing millions of guests with lodging, loyalty rewards, and digital travel enhancements. | Hospitality | 🇺🇸 McLean | 155,769 | 1919 |
| 3 | [RTX](https://www.tamtam.ai/c/rtx) (rtx.com)<br>Aerospace and defense operations through three business units focused on solving complex problems within aviation, space systems, and military technology sectors worldwide. | Aviation and Aerospace Component Manufacturing | 🇺🇸 Arlington | 139,657 |  |
| 4 | [Boeing](https://www.tamtam.ai/c/boeing) (boeing.com)<br>A global aerospace leader providing commercial airplanes, defense, space systems, and services, focused on innovation, customer delivery, and employee growth | Aviation and Aerospace Component Manufacturing | 🇺🇸 Arlington | 129,130 | 1916 |
| 5 | [DXC Technology](https://www.tamtam.ai/c/dxc-technology) (dxc.com)<br>It assists global companies in managing critical systems, modernizing IT, optimizing data, and ensuring security across various cloud environments. | IT Services and IT Consulting | 🇺🇸 Ashburn | 90,597 | 2017 |
| 6 | [Northrop Grumman](https://www.tamtam.ai/c/northrop-grumman) (northropgrumman.com)<br>Development of advanced technology solutions in autonomous systems, cyber, space, and defense to enhance global security and modernization. | Defense and Space Manufacturing | 🇺🇸 Falls Church | 86,220 |  |
| 7 | [Mars](https://www.tamtam.ai/c/mars) (mars.com)<br>Multinational conglomerate focused on delivering quality products through five core principles including responsibility and efficiency while employing over one hundred fifty thousand associates globally. | Food and Beverage Manufacturing | 🇺🇸 McLean | 55,984 | 1911 |
| 8 | [Amentum](https://www.tamtam.ai/c/amentum) (amentum.com)<br>Amentum is a global leader in engineering, project management, and solutions integration, specializing in modernizing critical missions worldwide with speed and confidence | Defense and Space Manufacturing | 🇺🇸 Chantilly | 50,000 |  |
| 9 | [Raytheon](https://www.tamtam.ai/c/raytheon) (rtx.com)<br>Develops integrated air and missile defense, advanced sensors, space-based systems, hypersonics, and cyber solutions to provide next-generation protection and high-performance military effectors. | Defense and Space Manufacturing | 🇺🇸 Arlington | 48,589 | 1922 |
| 10 | [The Salvation Army](https://www.tamtam.ai/c/the-salvation-army) (salvationarmyusa.org)<br>A national organization providing social services, including food, shelter, rehabilitation, and spiritual enrichment, while preaching the gospel and meeting human needs without discrimination | Non-profit Organizations | 🇺🇸 Alexandria | 38,675 | 1865 |
| 11 | [Booz Allen Hamilton](https://www.tamtam.ai/c/booz-allen-hamilton) (boozallen.com)<br>Innovative technology consulting firm advancing critical missions through AI, cybersecurity, and engineering solutions, empowering clients to shape the future | Software Development | 🇺🇸 McLean | 37,244 | 1914 |
| 12 | [Leidos](https://www.tamtam.ai/c/leidos) (leidos.com)<br>Global technology leader providing digital mission innovations and efficient technical services for government and commercial customers through a diverse, flexible work environment. | Defense and Space Manufacturing | 🇺🇸 Reston | 37,171 | 1969 |
| 13 | [Bechtel Corporation](https://www.tamtam.ai/c/bechtel-corporation) (bechtel.com)<br>Engineering, construction, and project management services for energy, infrastructure, manufacturing, mining, and nuclear markets worldwide, delivering successful outcomes. | Construction | 🇺🇸 Reston | 33,626 | 1898 |
| 14 | [Maximus](https://www.tamtam.ai/c/maximus) (maximus.com)<br>The company provides transformative technology services, digital customer experiences, and clinical health services to improve lives and support customer missions | Government Administration | 🇺🇸 McLean | 26,654 |  |
| 15 | [General Dynamics Information Technology](https://www.tamtam.ai/c/general-dynamics-information-technology) (gdit.com)<br>Provides technology and professional services to U.S. government agencies, specializing in digital modernization, AI, cloud, cyber, and application development worldwide. | IT System Data Services | 🇺🇸 Falls Church | 26,598 |  |
| 16 | [CACI International Inc](https://www.tamtam.ai/c/caci-international-inc) (caci.com)<br>providing advanced technology and expert services to address complex national security challenges for government and defense sectors | Defense and Space Manufacturing | 🇺🇸 Reston | 22,223 | 1962 |
| 17 | [Ferguson](https://www.tamtam.ai/c/ferguson) (ferguson.com)<br>Distribution of plumbing supplies, pipe, valves, fittings for residential and commercial projects across multiple industries in North America. | Wholesale | 🇺🇸 Newport News | 21,659 | 1953 |
| 18 | [Parsons Corporation](https://www.tamtam.ai/c/parsons-corporation) (parsons.com)<br>A digitally enabled solutions provider creating future defense, intelligence, and critical infrastructure solutions with an agile and innovative approach | Civil Engineering | 🇺🇸 Chantilly | 20,710 |  |
| 19 | [BAE Systems, Inc.](https://www.tamtam.ai/c/bae-systems-inc) (jobs.baesystems.com)<br>International defense, security, and aerospace operations providing advanced electronic systems, cyber intelligence, combat vehicles, naval weapons, ship maintenance, and vehicle upgrades for military use. | Defense and Space Manufacturing | 🇺🇸 Falls Church | 16,731 |  |
| 20 | [Hilton Hotels & Resorts](https://www.tamtam.ai/c/hilton-hotels-and-resorts) (stories.hilton.com)<br>Provides exceptional hospitality across six hundred global destinations featuring inspiring designs and award winning bars and restaurants for travelers seeking trusted stays. | Hospitality | 🇺🇸 McLean | 16,704 | 1919 |
| 21 | [DoubleTree by Hilton - Tempe](https://www.tamtam.ai/c/doubletree-by-hilton) (hilton.com)<br>Upscale hotel brand providing comfort to business and leisure travelers worldwide with warm cookie welcome, award-winning loyalty program, and global hospitality offerings | Hospitality | 🇺🇸 McLean | 13,000 | 1969 |
| 22 | [Guidehouse](https://www.tamtam.ai/c/guidehouse) (guidehouse.com)<br>Global AI-led professional services firm providing advisory, technology, and managed services to commercial and government sectors for efficiency and resilience. | Business Consulting and Services | 🇺🇸 McLean | 15,865 |  |
| 23 | [Apex Systems](https://www.tamtam.ai/c/apex-systems) (apexsystems.com)<br>Specializes in strategy, transformation, managed services including application development, data, cloud, cybersecurity, and AI solutions across global markets. | IT Services and IT Consulting | 🇺🇸 Glen Allen | 13,945 | 1995 |
| 24 | [Hilton Garden Inn](https://www.tamtam.ai/c/hilton-garden-inn) (hilton.com)<br>Award-winning brand providing upscale, affordable accommodations and modern amenities for business and leisure guests worldwide Guaranteed brighter and better stays | Hospitality | 🇺🇸 McLean | 13,402 | 1996 |
| 25 | [Sunrise Senior Living](https://www.tamtam.ai/c/sunrise-senior-living) (sunriseseniorliving.com)<br>A senior living company with over 270 communities in the US and Canada, focusing on championing quality of life for seniors Offering rewarding career opportunities | Hospitals and Health Care | 🇺🇸 McLean | 12,929 | 1981 |
| 26 | [CoStar Group](https://www.tamtam.ai/c/costar-group) (costargroup.com)<br>A leading provider of online real estate marketplaces, information, and analytics for commercial and residential properties, with a global presence | Real Estate | 🇺🇸 Arlington | 11,725 | 1987 |
| 27 | [Five Guys Enterprises](https://www.tamtam.ai/c/five-guys-enterprises) (fiveguys.com)<br>Opened, perfected, and expanded burger restaurants from a local presence to over 1,900 locations globally, including North America, Europe, and the Middle East, since 1986. | Restaurants | 🇺🇸 Alexandria | 11,602 | 1986 |
| 28 | [Hampton](https://www.tamtam.ai/c/hampton) (hilton.com)<br>A leading upper-midscale hotel brand offering high-quality accommodations with friendly service, innovative technology, and global presence through numerous properties | Hospitality | 🇺🇸 McLean | 11,536 |  |
| 29 | [V2X Inc](https://www.tamtam.ai/c/v2x-inc) (gov2x.com)<br>Integrated solutions across operations, logistics, aerospace, training, and technology markets for national security and international clients throughout the entire mission lifecycle. | Defense and Space Manufacturing | 🇺🇸 McLean | 11,084 |  |
| 30 | [George Mason University](https://www.tamtam.ai/c/george-mason-university) (gmu.edu)<br>Public research university offering over 200 degree programs across multiple campuses, fostering innovation, diversity, and career readiness for students. | Higher Education | 🇺🇸 Fairfax | 10,741 |  |
| 31 | [ICF](https://www.tamtam.ai/c/icf) (icf.com)<br>Global provider combining expertise and technology to solve complex challenges, support change management, and shape future strategies for clients. | Business Consulting and Services | 🇺🇸 Reston | 10,724 | 1969 |
| 32 | [Smithfield Foods](https://www.tamtam.ai/c/smithfield-foods) (smithfieldfoods.com)<br>Leading American food company specializing in packaged meats and fresh pork products, partnering with farmers to supply quality protein globally. | Food and Beverage Manufacturing | 🇺🇸 Smithfield | 10,598 |  |
| 33 | [Defense Logistics Agency](https://www.tamtam.ai/c/defense-logistics-agency) (dla.mil)<br>Management of global defense supply chain including procurement, warehousing, transportation, and disposal of military materials and services. | Armed Forces | 🇺🇸 Fort Belvoir | 10,533 | 1961 |
| 34 | [Brink’s Inc](https://www.tamtam.ai/c/brink-s-inc) (cl.brinks.com)<br>Global provider of secure solutions for transportation, storage, currency processing, ATM services, security, and technology with a vast global footprint | Transportation, Logistics, Supply Chain and Storage | 🇺🇸 Richmond | 10,526 | 1859 |
| 35 | [Performance Food Group](https://www.tamtam.ai/c/performance-food-group) (pfgc.com)<br>Distributes food, related products to restaurants, schools, healthcare facilities, businesses, retailers, theaters, and convenience stores across North America. | Food and Beverage Services | 🇺🇸 Richmond | 8,473 |  |
| 36 | [The Nature Conservancy](https://www.tamtam.ai/c/the-nature-conservancy) (nature.org)<br>Protecting and conserving natural resources through science-based, community-driven efforts to ensure a sustainable future for all life. | Non-profit Organizations | 🇺🇸 Arlington | 7,441 | 1951 |
| 37 | [Constellis](https://www.tamtam.ai/c/constellis) (constellis.com)<br>The company provides comprehensive risk management and humanitarian solutions globally to safeguard people and infrastructure, with a focus on creating a safer world | Security and Investigations | 🇺🇸 Herndon | 6,920 |  |
| 38 | [Defense Contract Management Agency (DCMA)](https://www.tamtam.ai/c/defense-contract-management-agency-dcma) (dcma.mil)<br>Integrated team of acquisition and support professionals managing contracts for the Defense Department, other federal organizations, and international partners to equip warfighters | Defense and Space Manufacturing | 🇺🇸 Fort Lee | 6,724 | 2000 |
| 39 | [Embassy Suites](https://www.tamtam.ai/c/embassy-suites) (hilton.com)<br>We provide two-room suites, cooked-to-order breakfast, and evening drinks/snacks for guests at over 260 locations, focusing on positive impact and community involvement | Hospitality | 🇺🇸 McLean | 6,721 | 1983 |
| 40 | [Cvent](https://www.tamtam.ai/c/cvent) (cvent.com)<br>Global provider of hospitality technology solutions for meetings and events, focused on powering human connections and industry transformation through innovative software applications. | Software Development | 🇺🇸 Tysons Corner | 6,609 | 1999 |
| 41 | [Leonardo DRS](https://www.tamtam.ai/c/leonardo-drs) (leonardodrs.com)<br>Providing advanced sensing, network computing, force protection, and electric power propulsion technologies to global national security customers through practical, high-performance defense innovation. | Defense and Space Manufacturing | 🇺🇸 Arlington | 6,551 | 1969 |
| 42 | [United States Department of the Army](https://www.tamtam.ai/c/united-states-department-of-the-army) (army.mil)<br>The Department of the Army is a federal government agency within the Department of Defense responsible for organizing and leading the United States Army | Government Administration | 🇺🇸 Arlington | 6,218 | 1947 |
| 43 | [Strategic Education, Inc](https://www.tamtam.ai/c/strategic-education-inc) (strategiceducation.com)<br>The company is dedicated to enabling economic mobility through innovative education programs for working adults, improving college affordability and workforce readiness | Higher Education | 🇺🇸 Herndon | 6,092 | 2018 |
| 44 | [The AES Corporation](https://www.tamtam.ai/c/the-aes-corporation) (aes.com)<br>Energy company focused on innovative, customized solutions for organizations with a collaborative approach, empowering growth and driving impact in the energy sector | Utilities | 🇺🇸 Arlington | 5,910 | 1981 |
| 45 | [DECA Inc.](https://www.tamtam.ai/c/deca-inc) (deca.org)<br>A non-profit organization preparing high school and college students for careers in marketing, finance, hospitality, and management globally | Education Administration Programs | 🇺🇸 Reston | 5,842 | 1946 |
| 46 | [Aptara](https://www.tamtam.ai/c/aptara) (aptaracorp.com)<br>Transforms content for digital and corporate learning audiences, accelerating information providers' transition from print to digital with production, design, and new media enhancements. | E-Learning Providers | 🇺🇸 Chantilly | 5,633 | 1988 |
| 47 | [Defense Health Agency](https://www.tamtam.ai/c/defense-health-agency-falls-church) (dha.mil)<br>Providing healthcare services to millions globally, supporting hundreds of hospitals and clinics with dedicated military and civilian personnel. | Hospitals and Health Care | 🇺🇸 Falls Church | 5,147 | 2013 |
| 48 | [Mission Technologies, a division of HII](https://www.tamtam.ai/c/mission-technologies-a-division-of-hii) (hii.com)<br>The company's Mission Technologies division develops integrated solutions for military operations, including C5ISR, AI, cyberspace strategies, unmanned systems, and platform modernization | Defense and Space Manufacturing | 🇺🇸 McLean | 5,049 |  |
| 49 | [APL](https://www.tamtam.ai/c/apl) (apl.com)<br>Ocean transportation and in-country logistics services with U.S. flagged vessels connecting North America to key global military locations. | Maritime Transportation | 🇺🇸 Arlington | 5,040 | 1848 |
| 50 | [LanceSoft, Inc.](https://www.tamtam.ai/c/lancesoft-inc) (lancesoft.com)<br>A certified MBE and woman-owned organization providing global workforce solutions and IT services to diverse clients across various domains with human touch | IT Services and IT Consulting | 🇺🇸 Herndon | 4,954 | 2000 |
| 51 | [Department of War Education Activity (DOWEA)](https://www.tamtam.ai/c/department-of-war-education-activity-dowea) (dodea.edu)<br>Management and operation of prekindergarten through 12th grade educational programs for Department of Defense families worldwide across multiple locations. | Primary and Secondary Education | 🇺🇸 Alexandria | 4,898 | 1946 |
| 52 | [Deltek](https://www.tamtam.ai/c/deltek) (deltek.com)<br>Deltek provides project-based businesses with software solutions to enhance project success and financial management through superior intelligence and collaboration | Software Development | 🇺🇸 Herndon | 4,820 |  |
| 53 | [PAE](https://www.tamtam.ai/c/pae) (amentum.com)<br>Global operational support provider with over 20,000 employees in 60 countries, delivering secure services for US government and allies since 1955 | International Trade and Development | 🇺🇸 Falls Church | 4,780 | 1955 |
| 54 | [Markel](https://www.tamtam.ai/c/markel) (markel.com)<br>Specialty insurance provider offering tailored coverage solutions for complex risks, prioritizing long-term partnerships with clients and brokers worldwide. | Insurance | 🇺🇸 Glen Allen | 4,476 |  |
| 55 | [Dexian](https://www.tamtam.ai/c/dexian) (dexian.com)<br>A leading provider of staffing, IT, and workforce solutions with a global presence, connecting talent, technology, and organizations for game-changing results | IT Services and IT Consulting | 🇺🇸 McLean | 4,431 |  |
| 56 | [Volkswagen of America, Inc](https://www.tamtam.ai/c/volkswagen-of-america-inc) (vw.com)<br>Research, development, manufacturing, sales, marketing, and service of passenger vehicles through a network of independent dealers in the U.S. | Motor Vehicle Manufacturing | 🇺🇸 Reston | 4,326 | 1955 |
| 57 | [Ellucian](https://www.tamtam.ai/c/ellucian) (ellucian.com)<br>Leading provider of cloud & SaaS solutions for higher education institutions worldwide, enhancing operations and enriching the experience for millions of students | Higher Education | 🇺🇸 Reston | 4,315 | 1968 |
| 58 | [NAVY EXCHANGE SERVICE COMMAND (NEXCOM)](https://www.tamtam.ai/c/navy-exchange-service-command-nexcom) (mynavyexchange.com)<br>A global enterprise within the Department of Defense providing quality goods and services to military personnel and their families worldwide | Retail | 🇺🇸 Virginia Beach | 4,266 | 1946 |
| 59 | [BWXT](https://www.tamtam.ai/c/bwxt) (bwxt.com)<br>Manufacturing naval nuclear reactors, precision components, and fuel while providing environmental restoration, medical radioisotopes, and microreactor technology for defense and space applications. | Defense and Space Manufacturing | 🇺🇸 Lynchburg | 4,234 | 1867 |
| 60 | [Entrepreneurs'​ Organization](https://www.tamtam.ai/c/entrepreneurs-organization) (eonetwork.org)<br>A global support network for entrepreneurs, fostering growth and personal development through connections, experiences, and learning opportunities across 61 countries | Non-profit Organizations | 🇺🇸 Alexandria | 4,078 | 1987 |
| 61 | [Marine Corps Community Services](https://www.tamtam.ai/c/marine-corps-community-services) (usmc-mccs.org)<br>Providing comprehensive support programs and services for Marines, their families, retirees, and civilians worldwide to enhance quality of life and operational readiness | Government Administration | 🇺🇸 Quantico | 4,029 | 1998 |
| 62 | [GTT](https://www.tamtam.ai/c/gtt-arlington) (gtt.net)<br>Global managed network and security services provider offering advanced cloud, networking, and security solutions with professional services and exceptional support worldwide | Telecommunications | 🇺🇸 Arlington | 3,917 |  |
| 63 | [Military Sealift Command](https://www.tamtam.ai/c/military-sealift-command) (msc.usff.navy.mil)<br>This company operates civilian-crewed ships that support the US Navy, conduct specialized missions, preposition combat cargo at sea, and transport military supplies worldwide | Maritime Transportation | 🇺🇸 Norfolk | 3,864 | 1949 |
| 64 | [Evolent](https://www.tamtam.ai/c/evolent) (evolent.com)<br>Partnering with health plans and providers to deliver evidence-based, affordable, and compassionate care for complex health conditions nationwide. | Hospitals and Health Care | 🇺🇸 Arlington | 3,799 | 2011 |
| 65 | [Orbital ATK](https://www.tamtam.ai/c/orbital-atk) (northropgrumman.com)<br>Design and production of reliable, innovative space-related systems, defense products, and commercially-driven services for access to space for various global aerospace markets. | Defense and Space Manufacturing | 🇺🇸 Dulles | 3,531 | 2015 |
| 66 | [Strategy](https://www.tamtam.ai/c/strategy) (strategy.com)<br>First and largest Bitcoin treasury. Leading provider of universal semantic layer and AI+BI software. Unifies data and powers governed insights. | Software Development | 🇺🇸 Tysons Corner | 3,470 | 1989 |
| 67 | [QBurst](https://www.tamtam.ai/c/qburst) (qburst.com)<br>A full-service software solutions provider that helps clients enhance business effectiveness by leveraging digital technology | IT Services and IT Consulting | 🇺🇸 Chantilly | 3,383 | 2004 |
| 68 | [MeadWestvaco (MWV)](https://www.tamtam.ai/c/meadwestvaco-mwv) (westrock.com)<br>It provides consumer and corrugated packaging solutions, partnering with customers to deliver innovative products across various global markets. | Packaging and Containers Manufacturing | 🇺🇸 Richmond | 3,307 |  |
| 69 | [Drug Enforcement Administration](https://www.tamtam.ai/c/drug-enforcement-administration) (dea.gov)<br>Enforces controlled substance laws and regulations in the US, targets major drug traffickers, manages intelligence, seizes assets, and coordinates with law enforcement agencies. | Law Enforcement | 🇺🇸 Springfield | 3,304 | 1973 |
| 70 | [Universal Leaf Tobacco Company](https://www.tamtam.ai/c/universal-leaf-tobacco-company) (universalcorp.com)<br>A global agri-products supplier specializing in sourcing and processing leaf tobacco, plant-based ingredients, and producing specialty botanical extracts and flavorings | Tobacco Manufacturing | 🇺🇸 Richmond | 3,258 | 1918 |
| 71 | [National Geospatial-Intelligence Agency](https://www.tamtam.ai/c/national-geospatial-intelligence-agency) (nga.mil)<br>Delivers world-class geospatial intelligence to warfighters, policymakers, and first responders to support national security priorities, disaster response, and global navigation efforts. | Defense and Space Manufacturing | 🇺🇸 Springfield | 3,199 | 1996 |
| 72 | [Silgan Dispensing](https://www.tamtam.ai/c/silgan-dispensing) (silgandispensing.com)<br>Global supplier of triggers, pumps, sprayers, and dispensing solutions for consumer goods in home, health, and beauty markets, offering innovative and customizable distribution solutions | Packaging and Containers Manufacturing | 🇺🇸 Richmond | 3,147 | 1984 |
| 73 | [SOSi](https://www.tamtam.ai/c/sosi) (sosi.com)<br>Delivering transformational technology and mission solutions for aerospace, defense, and government services clients while addressing modern challenges through trusted industry leadership. | Defense and Space Manufacturing | 🇺🇸 Reston | 3,124 | 1989 |
| 74 | [Lidl US](https://www.tamtam.ai/c/lidl-us) (careers.lidl.com)<br>Family-owned business offering high-quality goods at affordable prices Operates over 11,500 stores in 32 countries, growing rapidly in the US Join us for career development opportunities | Retail | 🇺🇸 Arlington | 3,063 | 1973 |
| 75 | [United Way](https://www.tamtam.ai/c/united-way) (unitedway.org)<br>Mobilizing communities worldwide to address local challenges, improve health, youth opportunities, financial security, and strengthen resilience for thriving lives. | Non-profit Organizations | 🇺🇸 Alexandria | 3,044 |  |
| 76 | [Defense Commissary Agency](https://www.tamtam.ai/c/defense-commissary-agency) (shop.commissaries.com)<br>Operation of global commissary stores providing tax-free groceries and savings to military personnel, retirees, and their families. | Retail Groceries | 🇺🇸 Fort Gregg-Adams | 3,033 | 1991 |
| 77 | [Triple Canopy (A Constellis Company)](https://www.tamtam.ai/c/triple-canopy-a-constellis-company) (constellis.com)<br>A leading provider of risk management and operational support services to government and commercial clients worldwide, with a focus on compliance and ethical practices | Security and Investigations | 🇺🇸 Herndon | 2,891 | 2003 |
| 78 | [2U](https://www.tamtam.ai/c/2u) (2u.com)<br>A leading platform providing free-to-degree online education, connecting over 81 million learners with top universities and industry experts worldwide | Education Administration Programs | 🇺🇸 Arlington | 2,865 | 2008 |
| 79 | [CFA Institute](https://www.tamtam.ai/c/cfa-institute) (cfainstitute.org)<br>Global community of 190,000 investment professionals promoting ethical behavior, raising standards of excellence, and fostering trust in financial markets worldwide | Financial Services | 🇺🇸 Charlottesville | 2,775 | 1947 |
| 80 | [LCC - A Tech Mahindra Company](https://www.tamtam.ai/c/lcc-a-tech-mahindra-company) (lcc.com)<br>A pioneer since 1983, providing network services globally for telecom operators with a focus on innovation, consultancy, and managed services | Telecommunications | 🇺🇸 McLean | 2,770 | 1983 |
| 81 | [10Pearls](https://www.tamtam.ai/c/10pearls) (10pearls.com)<br>A global leader in product innovation and software development, specializing in transforming businesses through digital technology with a focus on social impact | IT Services and IT Consulting | 🇺🇸 Vienna | 2,760 |  |
| 82 | [DoDEA](https://www.tamtam.ai/c/dodea) (dodea.edu)<br>A global school system catering to US military and eligible DoD civilian families, providing world-class education services worldwide | Education Administration Programs | 🇺🇸 Arlington | 2,709 |  |
| 83 | [Appian](https://www.tamtam.ai/c/appian) (appian.com)<br>Delivers software platform helping organizations run processes to reduce costs, improve customer experiences, and gain strategic edges across many different global industries. | Software Development | 🇺🇸 McLean | 2,632 | 1999 |
| 84 | [TechnoServe](https://www.tamtam.ai/c/technoserve) (technoserve.org)<br>A nonprofit organization empowering people in the developing world to build competitive farms, businesses, and industries to alleviate poverty | Non-profit Organizations | 🇺🇸 Arlington | 2,599 | 1968 |
| 85 | [QTS Data Centers](https://www.tamtam.ai/c/qts-data-centers) (quantumfiber.com)<br>Provider of data center solutions with over 9 million sq ft of space in North America Offers secure infrastructure, connectivity, and premium customer service | IT Services and IT Consulting | 🇺🇸 Sterling | 2,591 | 2005 |
| 86 | [AV](https://www.tamtam.ai/c/av) (avinc.com)<br>Innovative solutions provider specializing in unmanned systems and high-altitude pseudo-satellites, empowering military and commercial customers with actionable intelligence for smarter decisions | Defense and Space Manufacturing | 🇺🇸 Arlington | 2,466 | 1971 |
| 87 | [S & K Sales Co.](https://www.tamtam.ai/c/s-and-k-sales-co) (sksales.com)<br>A leading provider of brand name consumer products to the Worldwide Military Resale Market, including commissaries, exchanges, ships, and veterans canteens | Manufacturing | 🇺🇸 Virginia Beach | 2,435 | 1934 |
| 88 | [Beacon Building Products](https://www.tamtam.ai/c/beacon-building-products) (qxo.com)<br>Leading distributor of roofing materials and building products in the US and Canada, offering a wide range of supplies to support contractors for nearly 100 years | Wholesale Building Materials | 🇺🇸 Herndon | 2,428 | 1928 |
| 89 | [SHRM](https://www.tamtam.ai/c/shrm) (shrm.org)<br>A member-driven organization focused on creating better workplaces, serving as an expert on work-related issues and impacting millions globally | Human Resources Services | 🇺🇸 Alexandria | 2,413 | 1948 |
| 90 | [Trianz](https://www.tamtam.ai/c/trianz) (trianz.com)<br>Delivers cloud adoption and AI transformation through a unified platform for migration, modernization, multi-cloud management, FinOps, and autonomous federated AI data intelligence. | Technology, Information and Internet | 🇺🇸 Herndon | 2,369 | 2001 |
| 91 | [Systems Planning & Analysis](https://www.tamtam.ai/c/systems-planning-and-analysis) (spa.com)<br>Provides rigorous, objective analytical insights and innovative solutions for critical national security programs supporting US and Allied missions. | Defense and Space Manufacturing | 🇺🇸 Alexandria | 2,242 |  |
| 92 | [Air Force Medical Service](https://www.tamtam.ai/c/air-force-medical-service) (airforcemedicine.af.mil)<br>The Air Force Medical Service provides full spectrum medical readiness to ensure medically fit forces and improve the health of all they serve | Hospitals and Health Care | 🇺🇸 Falls Church | 2,227 | 1949 |
| 93 | [WorldStrides](https://www.tamtam.ai/c/worldstrides) (worldstrides.com)<br>WorldStrides provides educational travel experiences for students, offering domestic and international programs focused on experiential learning, performing arts, sports, and more | Education Administration Programs | 🇺🇸 Charlottesville | 2,162 |  |
| 94 | [Pavion](https://www.tamtam.ai/c/pavion) (pavion.com)<br>A company providing fire, security, and integration solutions across multiple industries with a focus on safety, security, and communication | Security Systems Services | 🇺🇸 Chantilly | 2,143 |  |
| 95 | [Transaction Network Services (TNS)](https://www.tamtam.ai/c/transaction-network-services-tns) (tnsi.com)<br>A global provider of Infrastructure-as-a-Service solutions for financial, communications, and payments markets, supporting secure, flexible, and efficient interactions worldwide | Telecommunications | 🇺🇸 Reston | 2,076 | 1990 |
| 96 | [American Institutes for Research](https://www.tamtam.ai/c/american-institutes-for-research) (air.org)<br>A nonprofit research institution providing evidence-based solutions for urgent challenges in education, health, workforce, human services, and international development worldwide | Research Services | 🇺🇸 Arlington | 2,010 | 1946 |
| 97 | [Valiant Integrated Services](https://www.tamtam.ai/c/valiant-integrated-services) (onevaliant.com)<br>Valiant supports critical missions worldwide by providing training, equipment, protection, and support for government agencies, peacekeepers, relief workers, and disaster response teams | Defense and Space Manufacturing | 🇺🇸 Herndon | 2,006 | 2017 |
| 98 | [DMI](https://www.tamtam.ai/c/dmi) (dminc.com)<br>provides digital services including cybersecurity, cloud, application development, and infrastructure support to public and private sector clients | IT Services and IT Consulting | 🇺🇸 McLean | 2,001 | 2002 |
| 99 | [Fluence](https://www.tamtam.ai/c/fluence) (fluenceenergy.com)<br>Global leader in energy storage products and services, providing modular solutions, comprehensive services, and AI-enabled software for managing renewable energy and storage | Renewable Energy Semiconductor Manufacturing | 🇺🇸 Arlington | 1,962 | 2018 |
| 100 | [CEB, now Gartner](https://www.tamtam.ai/c/ceb-now-gartner) (gartner.com)<br>Providing research, advisory services, and technology solutions to help organizations make informed decisions and achieve their strategic priorities for future success | IT Services and IT Consulting | 🇺🇸 Arlington | 1,934 | 1983 |

## 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.

## More company lists in Virginia

- [The largest companies in Virginia](https://www.tamtam.ai/l/largest-companies-virginia) (2,764)
- [IT Services and IT Consulting companies in Virginia](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-virginia) (485)
- [IT services companies in Virginia](https://www.tamtam.ai/l/it-services-companies-virginia) (455)
- [Professional services firms in Virginia](https://www.tamtam.ai/l/professional-services-firms-virginia) (344)
- [Consulting firms in Virginia](https://www.tamtam.ai/l/consulting-firms-virginia) (283)
- [Aerospace and defence companies in Virginia](https://www.tamtam.ai/l/aerospace-and-defense-companies-virginia) (247)
- [Education providers in Virginia](https://www.tamtam.ai/l/education-companies-virginia) (223)
- [Companies with in-house R&D in Virginia](https://www.tamtam.ai/l/r-and-d-companies-virginia) (166)
- [Critical infrastructure operators in Virginia](https://www.tamtam.ai/l/critical-infrastructure-operators-virginia) (131)
- [Public sector organisations in Virginia](https://www.tamtam.ai/l/public-sector-organisations-virginia) (131)
- [Retail chains in Virginia](https://www.tamtam.ai/l/retail-chains-virginia) (128)
- [AI companies in Virginia](https://www.tamtam.ai/l/ai-companies-virginia) (127)
- [Manufacturers in Virginia](https://www.tamtam.ai/l/manufacturers-virginia) (125)
- [Defense and Space Manufacturing companies in Virginia](https://www.tamtam.ai/l/defense-and-space-manufacturing-companies-virginia) (122)
- [Hospitals and Health Care companies in Virginia](https://www.tamtam.ai/l/hospitals-and-health-care-companies-virginia) (122)
- [Healthcare providers in Virginia](https://www.tamtam.ai/l/healthcare-providers-virginia) (121)
- [Software Development companies in Virginia](https://www.tamtam.ai/l/software-development-companies-virginia) (117)
- [Financial services firms in Virginia](https://www.tamtam.ai/l/financial-services-firms-virginia) (116)
- [Subscription businesses in Virginia](https://www.tamtam.ai/l/subscription-businesses-virginia) (114)
- [SaaS companies in Virginia](https://www.tamtam.ai/l/saas-companies-virginia) (103)
- [Non-profit Organizations companies in Virginia](https://www.tamtam.ai/l/non-profit-organizations-companies-virginia) (102)
- [Higher Education companies in Virginia](https://www.tamtam.ai/l/higher-education-companies-virginia) (100)
- [Cybersecurity companies in Virginia](https://www.tamtam.ai/l/cybersecurity-companies-virginia) (95)
- [Companies with a mobile app in Virginia](https://www.tamtam.ai/l/companies-with-mobile-app-virginia) (93)

## The same list elsewhere in United States

- [Multinational companies in the United States](https://www.tamtam.ai/l/multinational-companies-united-states) (16,197)
- [Multinational companies in California](https://www.tamtam.ai/l/multinational-companies-california) (2,592)
- [Multinational companies in New York State](https://www.tamtam.ai/l/multinational-companies-new-york-state) (2,216)
- [Multinational companies in Texas](https://www.tamtam.ai/l/multinational-companies-texas) (1,418)
- [Multinational companies in Florida](https://www.tamtam.ai/l/multinational-companies-florida) (897)
- [Multinational companies in Illinois](https://www.tamtam.ai/l/multinational-companies-illinois) (831)
- [Multinational companies in Massachusetts](https://www.tamtam.ai/l/multinational-companies-massachusetts) (637)
- [Multinational companies in New Jersey](https://www.tamtam.ai/l/multinational-companies-new-jersey) (624)
- [Multinational companies in Georgia](https://www.tamtam.ai/l/multinational-companies-georgia) (521)
- [Multinational companies in Pennsylvania](https://www.tamtam.ai/l/multinational-companies-pennsylvania) (472)
- [Multinational companies in Michigan](https://www.tamtam.ai/l/multinational-companies-michigan) (468)
- [Multinational companies in Alabama](https://www.tamtam.ai/l/multinational-companies-alabama) (416)
- [Multinational companies in Ohio](https://www.tamtam.ai/l/multinational-companies-ohio) (390)
- [Multinational companies in North Carolina](https://www.tamtam.ai/l/multinational-companies-north-carolina) (358)
- [Multinational companies in Washington State](https://www.tamtam.ai/l/multinational-companies-washington-state) (288)
- [Multinational companies in Colorado](https://www.tamtam.ai/l/multinational-companies-colorado) (228)
- [Multinational companies in Minnesota](https://www.tamtam.ai/l/multinational-companies-minnesota) (224)
- [Multinational companies in New York](https://www.tamtam.ai/l/multinational-companies-new-york) (1,836)
- [Multinational companies in San Francisco](https://www.tamtam.ai/l/multinational-companies-san-francisco) (446)
- [Multinational companies in Houston](https://www.tamtam.ai/l/multinational-companies-houston) (402)
- [Multinational companies in Chicago](https://www.tamtam.ai/l/multinational-companies-chicago) (366)
- [Multinational companies in Miami](https://www.tamtam.ai/l/multinational-companies-miami) (289)
- [Multinational companies in Atlanta](https://www.tamtam.ai/l/multinational-companies-atlanta) (252)
- [Multinational companies in Boston](https://www.tamtam.ai/l/multinational-companies-boston) (241)

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Source: https://www.tamtam.ai/l/multinational-companies-virginia