# Critical infrastructure operators around the world

Tamtam tracks 23,312 critical infrastructure operators worldwide. This list ranks the 100 largest by number of employees on LinkedIn, led by DHL, UnitedHealth Group and Bank of America. Their median headcount is 97,651. The most common headquarters are London (9), New York (8) and Mumbai (7).

This selection of critical infrastructure operators includes very large groups. They are mostly active in financial services, logistics, and energy sectors. Many of these companies have a global reach, managing extensive operations and services across multiple countries. The list highlights established organizations that play a fundamental role in various economies worldwide.

Notable companies include DHL, a global leader in logistics; UnitedHealth Group, a health care and well-being company; Bank of America, a global financial institution; and VINCI Concessions, focused on mobility infrastructure. Shell is a global energy company, and HSBC operates as a global financial services organization.

🌍 World · 100 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [DHL](https://www.tamtam.ai/c/dhl) (dhl.com)<br>Global leader in logistics offering parcel delivery, e-commerce solutions, international express, and supply chain management across various industries worldwide | Transportation, Logistics, Supply Chain and Storage | 🇩🇪 Bonn | 590,000 |  |
| 2 | [UnitedHealth Group](https://www.tamtam.ai/c/unitedhealth-group) (unitedhealthgroup.com)<br>Health care and well-being company focused on improving access, affordability, outcomes, and experiences through technology, data, and high-quality health benefits | Hospitals and Health Care | 🇺🇸 Eden Prairie | 380,000 | 1977 |
| 3 | [Bank of America](https://www.tamtam.ai/c/bank-of-america) (bankofamerica.com)<br>Global financial institution providing comprehensive banking, investing, and asset management services to individuals, small businesses, and large corporations through diverse risk management products. | Banking | 🇺🇸 Charlotte | 304,000 |  |
| 4 | [NHS](https://www.tamtam.ai/c/nhs) (www.nhs.uk)<br>It provides comprehensive healthcare services to UK residents, employing over 1.5 million staff and ensuring free access at the point of use. | Food and Beverage Services | 🇬🇧 | 252,871 | 1948 |
| 5 | [J.P. Morgan](https://www.tamtam.ai/c/j-p-morgan) (jpmorgan.com)<br>Providing comprehensive financial services and wealth management solutions to clients worldwide, prioritizing client interests and long-term relationships. | Financial Services | 🇺🇸 New York | 240,000 |  |
| 6 | [Wells Fargo](https://www.tamtam.ai/c/wells-fargo) (wellsfargo.com)<br>A diversified financial services company offering banking, investment, mortgage products, and more through numerous locations and digital platforms Serving customers globally | Financial Services | 🇺🇸 San Francisco | 234,570 |  |
| 7 | [JPMorganChase](https://www.tamtam.ai/c/jpmorganchase) (jpmorganchase.com)<br>Global financial institution, managing assets and investments, offering business advice, strategies, and innovative banking solutions to diverse clients worldwide. | Financial Services | 🇺🇸 New York | 231,537 |  |
| 8 | [VINCI Concessions](https://www.tamtam.ai/c/vinci-concessions) (vinci-concessions.com)<br>A global leader in mobility infrastructure, designing, financing, building, operating, and maintaining airports, highways, and railway projects in 23 countries | Civil Engineering | 🇫🇷 Nanterre | 219,000 |  |
| 9 | [VINCI Airports](https://www.tamtam.ai/c/vinci-airports) (vinci-airports.com)<br>Operates, develops, finances, builds airports globally, optimizing performance, modernizing infrastructure, and driving environmental transition with a net-zero emissions goal. | Airlines and Aviation | 🇫🇷 Nanterre | 219,000 |  |
| 10 | [HDFC Bank](https://www.tamtam.ai/c/hdfc-bank) (bank.in)<br>Provides comprehensive financial products and services, including loans, payments, wealth management, and housing finance to individuals and businesses across India. | Banking | 🇮🇳 Mumbai | 213,593 | 1994 |
| 11 | [Shell](https://www.tamtam.ai/c/shell) (shell.com)<br>A global energy company with a focus on cleaner energy solutions, serving millions of customers through retail service stations worldwide | Oil and Gas | 🇬🇧 London | 208,511 |  |
| 12 | [U.S. Department of Veterans Affairs](https://www.tamtam.ai/c/u-s-department-of-veterans-affairs) (va.gov)<br>Recruitment of skilled employees dedicated to providing respectful and appropriate care and support services for United States veterans. | Government Administration | 🇺🇸 Washington | 202,010 | 1930 |
| 13 | [Reliance Industries Limited](https://www.tamtam.ai/c/reliance-industries-limited) (ril.com)<br>Company's activities span hydrocarbon exploration and production, petroleum refining, petrochemicals, retail, and telecommunications. Committed to innovation-led, exponential growth. | Oil and Gas | 🇮🇳 Navi Mumbai | 200,730 |  |
| 14 | [HSBC](https://www.tamtam.ai/c/hsbc) (hsbc.com)<br>A global financial services organization with a network spanning 63 countries, serving individuals, companies, and governments, creating opportunities for customers worldwide | Financial Services | 🇬🇧 London | 197,879 |  |
| 15 | [AT&T](https://www.tamtam.ai/c/at-and-t) (att.com)<br>Innovative company connecting people with technology to create a seamless, better life through network, products, services, and passionate employees | Telecommunications | 🇺🇸 Dallas | 193,793 |  |
| 16 | [FedEx](https://www.tamtam.ai/c/fedex) (fedex.com)<br>A global leader in shipping, transportation, e-commerce, and business services, known for exceptional customer service and a focus on safety and ethics | Freight and Package Transportation | 🇺🇸 Memphis | 193,709 | 1973 |
| 17 | [Comcast](https://www.tamtam.ai/c/comcast) (comcast.com)<br>Delivering broadband, mobile, and video products, along with entertainment, sports, news, and theme park experiences; driven by passionate creators and innovators | Telecommunications | 🇺🇸 Philadelphia | 189,000 | 1963 |
| 18 | [Citi](https://www.tamtam.ai/c/citi) (citi.com)<br>A global financial institution with 200 years of experience providing services like asset safeguarding, lending, payments, and capital market access | Financial Services | 🇺🇸 New York | 188,351 | 1812 |
| 19 | [ICICI Bank](https://www.tamtam.ai/c/icici-bank) (bank.in)<br>Provides diverse banking products and services to individuals, SMEs, and corporates through branches, ATMs, mobile, internet, and phone channels. | Banking | 🇮🇳 Mumbai | 181,145 |  |
| 20 | [aramco](https://www.tamtam.ai/c/aramco) (aramco.com)<br>A leading producer of energy and chemicals, providing uninterrupted supply around the globe and working towards a low carbon economy | Oil and Gas | 🇸🇦 Dhahran | 170,467 |  |
| 21 | [UPS](https://www.tamtam.ai/c/ups) (ups.com)<br>A global transportation and logistics company with a strong social impact, offering innovative solutions and opportunities for job seekers worldwide | Truck Transportation | 🇺🇸 Atlanta | 168,435 | 1907 |
| 22 | [United States Postal Service](https://www.tamtam.ai/c/united-states-postal-service) (usps.com)<br>Delivers mail and packages to over 157 million addresses nationwide, connecting every American, every door, every business, everywhere, funded by sales, not tax dollars. | Government Administration | 🇺🇸 Washington | 159,003 |  |
| 23 | [BNP Paribas](https://www.tamtam.ai/c/bnp-paribas) (group.bnpparibas)<br>Leading bank in Europe, provides financial solutions for individuals, businesses, and institutions, including financing, investment, savings, and protection insurance across 64 countries. | Banking | 🇫🇷 Paris | 155,716 | 1848 |
| 24 | [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 |  |
| 25 | [HCA Healthcare](https://www.tamtam.ai/c/hca-healthcare) (dpxmedcity.net)<br>A healthcare organization with 186 hospitals and 2,300 sites, focused on providing quality care, advancing science, and impacting communities positively | Hospitals and Health Care | 🇺🇸 Nashville | 150,409 |  |
| 26 | [Allianz](https://www.tamtam.ai/c/allianz) (allianz.com)<br>A global insurance and asset management group serving over 100 million customers in 70+ countries, committed to sustainability and employee well-being | Financial Services | 🇩🇪 Munich | 150,057 |  |
| 27 | [AXA](https://www.tamtam.ai/c/axa) (axa.com)<br>Global insurer acting for human progress by protecting individuals, businesses, and societies, committed to collective good, risk understanding, and better protection. | Insurance | 🇫🇷 Paris | 148,548 |  |
| 28 | [Orange](https://www.tamtam.ai/c/orange-issy-les-moulineaux) (orange.com)<br>A leading global telecommunications operator offering services to millions of customers and multinational companies across 26 countries | Telecommunications | 🇫🇷 Issy-les-Moulineaux | 146,935 |  |
| 29 | [Vodafone](https://www.tamtam.ai/c/vodafone) (vodafone.com)<br>Using technology to connect people globally, drive social change, and improve lives while emphasizing the importance of humanity and collaboration | Telecommunications | 🇬🇧 London | 142,740 | 1982 |
| 30 | [Walgreens Boots Alliance](https://www.tamtam.ai/c/walgreens-boots-alliance) (walgreens.com)<br>Integrated healthcare and retail company operating thousands of pharmacy locations, providing medicines, health services, beauty products, and digital convenience globally. | Retail Pharmacies | 🇺🇸 Deerfield | 141,576 | 2014 |
| 31 | [CVS Health](https://www.tamtam.ai/c/cvs-health) (cvshealth.com)<br>Providing accessible health care services, managing chronic diseases, supporting medication compliance, and improving community health through local and digital channels. | Hospitals and Health Care | 🇺🇸 Woonsocket | 139,212 | 1963 |
| 32 | [Kaiser Permanente](https://www.tamtam.ai/c/kaiser-permanente) (healthy.kaiserpermanente.org)<br>Leading not-for-profit health plan with a unique business model driving industry improvements, serving millions of members across multiple states and impacting communities positively | Hospitals and Health Care | 🇺🇸 Oakland | 137,397 | 1945 |
| 33 | [Verizon](https://www.tamtam.ai/c/verizon) (verizon.com)<br>A global human network that values creativity, connection, and flexibility, dedicated to making an impact and moving the world forward | IT Services and IT Consulting | 🇺🇸 Basking Ridge | 137,000 |  |
| 34 | [BBVA](https://www.tamtam.ai/c/bbva) (bbva.com)<br>Global banking company driving digital transformation to provide cutting edge solutions to 85 million customers worldwide through collaborative and innovative work culture | Banking | 🇪🇸 Bilbao | 130,572 | 1857 |
| 35 | [Santander](https://www.tamtam.ai/c/santander) (santander.com)<br>Leading global bank offering retail, corporate, investment banking, wealth management, insurance, and payment services to diverse clients worldwide. | Banking | 🇪🇸 Boadilla del Monte | 129,701 |  |
| 36 | [Fresenius Medical Care](https://www.tamtam.ai/c/fresenius-medical-care) (freseniusmedicalcare.com)<br>Global leader in renal disease products and services, providing tailored dialysis treatments for improved quality of life for patients worldwide | Hospitals and Health Care | 🇩🇪 Bad Homburg | 128,000 | 1996 |
| 37 | [State Bank of India](https://www.tamtam.ai/c/state-bank-of-india) (bank.in)<br>Leading public sector bank with extensive branch network, offering specialized financial services to corporates, SMEs, NRIs, and retail customers. | Banking | 🇮🇳 Mumbai | 122,721 |  |
| 38 | [Telefónica](https://www.tamtam.ai/c/telefonica) (telefonica.com)<br>Leading global telecommunications company providing advanced infrastructure, innovative digital and data services, focusing on secure, cutting-edge technology and social impact. | Telecommunications | 🇪🇸 Madrid | 121,569 |  |
| 39 | [UBS](https://www.tamtam.ai/c/ubs) (ubs.com)<br>Wealth management, investment banking, asset management, and banking services globally, focusing on continuous growth, learning, innovation, and collaboration among diverse talents | Financial Services | 🇨🇭 Zurich | 117,814 | 1862 |
| 40 | [Optum](https://www.tamtam.ai/c/optum) (optum.com)<br>A leading health services and innovation company revolutionizing health care delivery, operations, and analytics to improve quality and efficiency globally | Hospitals and Health Care | 🇺🇸 Eden Prairie | 113,067 |  |
| 41 | [Itaú Unibanco](https://www.tamtam.ai/c/itau-unibanco) (itau.com.br)<br>Latin America's largest bank focusing on empowering people's transformation through news, work environment details, opportunities, and trends sharing | Banking | 🇧🇷 São Paulo | 112,811 |  |
| 42 | [State Farm](https://www.tamtam.ai/c/state-farm) (statefarm.com)<br>Providing insurance and financial solutions to help people manage risks, recover from unexpected events, and achieve their dreams. | Insurance | 🇺🇸 Bloomington | 112,234 | 1922 |
| 43 | [Lufthansa](https://www.tamtam.ai/c/lufthansa) (lufthansa.com)<br>Connecting passengers globally, shaping sustainable aviation, offering premium travel experiences, and enhancing customer comfort with advanced technology and services. | Airlines and Aviation | 🇩🇪 Frankfurt | 110,000 | 1953 |
| 44 | [TD](https://www.tamtam.ai/c/td-toronto) (careers.td.com)<br>A leading North American bank with a global presence, serving 22 million customers with a team of over 85,000 employees Providing legendary customer experiences | Banking | 🇨🇦 Toronto | 105,476 |  |
| 45 | [Morgan Stanley](https://www.tamtam.ai/c/morgan-stanley) (morganstanley.com)<br>Global financial services firm providing investment banking, securities, wealth and investment management services to corporations, governments, institutions, and individuals through strategic capital allocation. | Financial Services | 🇺🇸 New York | 103,041 |  |
| 46 | [RBC](https://www.tamtam.ai/c/rbc) (rbc.com)<br>Global financial institution focused on delivering leading performance through innovative solutions, exceptional client experiences, and community support initiatives in various countries | Banking | 🇨🇦 Toronto | 99,801 |  |
| 47 | [Axis Bank](https://www.tamtam.ai/c/axis-bank) (bank.in)<br>Leading private sector bank offering financial services to corporate, retail, MSME, and agriculture segments through extensive branch network and digital platforms. | Banking | 🇮🇳 Mumbai | 99,395 | 1994 |
| 48 | [airtel](https://www.tamtam.ai/c/airtel) (airtel.com)<br>Provides global connectivity, developing infrastructure for cutting-edge technologies like 5G, IoT, and enterprise solutions, contributing to 'Digital India' with a vast subscriber base. | Telecommunications | 🇮🇳 Gurugram | 99,135 |  |
| 49 | [Jio](https://www.tamtam.ai/c/jio) (jio.com)<br>It builds future products and services to empower billions of Indians, promoting a digital lifestyle and enhancing communication and connectivity. | Telecommunications | 🇮🇳 Navi Mumbai | 99,088 | 2010 |
| 50 | [Spectrum](https://www.tamtam.ai/c/spectrum-stamford) (spectrum.net)<br>A leading broadband connectivity company offering internet, TV, mobile, voice, and tailored advertising services to residential, business, and government customers | Telecommunications | 🇺🇸 Stamford | 97,651 | 1993 |
| 51 | [Intesa Sanpaolo](https://www.tamtam.ai/c/intesa-sanpaolo) (group.intesasanpaolo.com)<br>Leading Italian banking group with international presence, focusing on wealth management, advisory, and digital solutions Committed to impact financing and supporting those in need | Banking | 🇮🇹 Turin | 97,000 | 2007 |
| 52 | [T-Mobile](https://www.tamtam.ai/c/t-mobile) (careers.t-mobile.com)<br>Leading US wireless provider delivering advanced 4G LTE and nationwide 5G networks, prioritizing customer value, service excellence, and innovation in Bellevue, Washington | Telecommunications | 🇺🇸 Bellevue | 96,232 |  |
| 53 | [Humana](https://www.tamtam.ai/c/humana) (humana.com)<br>This company focuses on delivering personalized healthcare experiences, creating innovative solutions, and prioritizing the well-being of individuals and communities | Insurance | 🇺🇸 Louisville | 96,000 |  |
| 54 | [American Express](https://www.tamtam.ai/c/american-express) (americanexpress.com)<br>A globally integrated payments company supporting customers' financial confidence, promoting commerce, and providing experiences that enrich lives and drive business success | Financial Services | 🇺🇸 New York | 94,909 |  |
| 55 | [EDF](https://www.tamtam.ai/c/edf-paris) (edf.fr)<br>builds a net-zero energy future with electricity, innovative solutions, and services, to help save the planet and drive wellbeing and economic development. | Electric Power Generation | 🇫🇷 Paris | 93,235 |  |
| 56 | [Banco Bradesco](https://www.tamtam.ai/c/banco-bradesco) (banco.bradesco)<br>A leading private financial institution focusing on providing efficient solutions, products, and services to promote social mobility and sustainable development | Banking | 🇧🇷 Osasco | 89,132 |  |
| 57 | [U.S. Bank](https://www.tamtam.ai/c/u-s-bank) (usbank.com)<br>A leading commercial bank offering a blend of personal service and digital tools to serve millions of clients worldwide | Banking | 🇺🇸 Minneapolis | 87,474 |  |
| 58 | [Scotiabank](https://www.tamtam.ai/c/scotiabank) (scotiabank.com)<br>A global financial institution serving customers, families, and communities by providing advice, products, and services to help them achieve success | Banking | 🇨🇦 Toronto | 87,065 |  |
| 59 | [Kotak Mahindra Bank](https://www.tamtam.ai/c/kotak-mahindra-bank) (kotak.com)<br>Leading financial conglomerate offering banking, stock broking, mutual funds, insurance, and investment services across India and globally. | Banking | 🇮🇳 Mumbai | 86,827 | 1985 |
| 60 | [TotalEnergies](https://www.tamtam.ai/c/totalenergies) (totalenergies.com)<br>Global energy company with 105,000 employees focused on energy transition, safety, ethics, innovation, and career development worldwide. | Oil and Gas | 🇫🇷 Paris La Défense Cedex | 86,609 |  |
| 61 | [bp](https://www.tamtam.ai/c/bp) (bp.com)<br>Investing in a balanced energy system by transitioning from oil and gas to lower-carbon energy, convenience stores, and power trading | Oil and Gas | 🇬🇧 London | 85,000 | 1909 |
| 62 | [Capital One](https://www.tamtam.ai/c/capital-one) (capitalone.com)<br>Innovative bank focused on financial inclusion, creating tools to improve customers' lives, and encouraging a work-life balance for employees | Financial Services | 🇺🇸 McLean | 82,863 |  |
| 63 | [Barclays](https://www.tamtam.ai/c/barclays) (home.barclays)<br>A British universal bank with global presence, offering consumer banking, payments, corporate and investment banking services, supported by technology and operational solutions | Financial Services | 🇬🇧 London | 82,417 |  |
| 64 | [Deutsche Bank](https://www.tamtam.ai/c/deutsche-bank) (db.com)<br>Offers financial services to companies, governments, institutions, small businesses, and individuals globally. Focuses on corporate, private, and investment banking, plus asset management. | Financial Services | 🇩🇪 Frankfurt | 81,792 | 1870 |
| 65 | [PT Pertamina (Persero)](https://www.tamtam.ai/c/pt-pertamina-persero) (pertamina.com)<br>Engaged in integrated energy sectors, including upstream, midstream, downstream, and renewable energy, with over 50 years of experience. | Oil and Gas | 🇮🇩 Jakarta | 80,882 | 1957 |
| 66 | [A.P. Moller - Maersk](https://www.tamtam.ai/c/a-p-moller-maersk) (maersk.com)<br>An integrated transport and logistics company connecting the world for customers and society, enabling trade, growth, and thriving across 130 countries. | Transportation, Logistics, Supply Chain and Storage | 🇩🇰 Copenhagen | 80,345 | 1904 |
| 67 | [Standard Chartered](https://www.tamtam.ai/c/standard-chartered) (sc.com)<br>An international banking group with a presence in 53 markets, driving commerce and prosperity through diversity and values Listed on London and Hong Kong Stock Exchanges | Banking | 🇬🇧 London | 79,401 |  |
| 68 | [Groupe Crédit Agricole](https://www.tamtam.ai/c/groupe-credit-agricole) (credit-agricole.com)<br>Leading European retail bank offering comprehensive financial services including loans, insurance, asset management, corporate banking, and customer-focused solutions. | Banking | 🇫🇷 Montrouge | 76,287 |  |
| 69 | [Goldman Sachs](https://www.tamtam.ai/c/goldman-sachs) (goldmansachs.com)<br>Global financial institution providing expert capital markets services, investment banking, and asset management for clients through partnership, integrity, and world-class operational excellence. | Financial Services | 🇺🇸 New York | 76,000 |  |
| 70 | [Delta Air Lines](https://www.tamtam.ai/c/delta-air-lines) (delta.com)<br>Leading global airline focused on safety, innovation, operational excellence, and award-winning customer service connecting people and cultures worldwide. | Airlines and Aviation | 🇺🇸 Atlanta | 75,854 | 1925 |
| 71 | [United Airlines](https://www.tamtam.ai/c/united-airlines) (united.com)<br>Leading airline with over 90,000 employees focused on customer service, sustainability, and teamwork, currently hiring 15,000 new team members in 2023 | Airlines and Aviation | 🇺🇸 Chicago | 75,520 | 1926 |
| 72 | [DSV - Global Transport and Logistics](https://www.tamtam.ai/c/dsv-global-transport-and-logistics) (dsv.com)<br>Global supply chain solutions provider with a focus on customer experience, sustainability, diversity, and integrity, spanning over 80 countries | Transportation, Logistics, Supply Chain and Storage | 🇩🇰 Hedehusene | 75,000 | 1976 |
| 73 | [BT Group](https://www.tamtam.ai/c/bt-group) (bt.com)<br>A global communications services company connecting people through technology to address challenges like the pandemic, climate change, and cyber security | Telecommunications | 🇬🇧 London | 73,712 |  |
| 74 | [Life Insurance Corporation of India](https://www.tamtam.ai/c/life-insurance-corporation-of-india) (licindia.in)<br>Provides diverse life insurance products including health, pension, ULIPs, group schemes, and micro insurance with extensive agent network. | Insurance | 🇮🇳 Mumbai | 73,235 |  |
| 75 | [ExxonMobil](https://www.tamtam.ai/c/exxonmobil) (corporate.exxonmobil.com)<br>Scientists and engineers pioneering research, pursuing new technologies to reduce emissions, creating efficient fuels, meeting global energy needs, aiming net-zero emissions by 2050. | Oil and Gas | 🇨🇿 | 73,163 |  |
| 76 | [FCC](https://www.tamtam.ai/c/fcc) (fcc.es)<br>Global citizen services company with 100+ years of experience in environmental services, water, and infrastructure sectors, operating in 34 countries | Environmental Services | 🇪🇸 Madrid | 71,000 | 1900 |
| 77 | [Standard Bank Group](https://www.tamtam.ai/c/standard-bank-group) (standardbank.com)<br>Financial services provider focused on inclusive, sustainable economic development and growth across sub-Saharan Africa with ethical business practices. | Financial Services | 🇿🇦 Johannesburg | 70,728 | 1862 |
| 78 | [Banco do Brasil](https://www.tamtam.ai/c/banco-do-brasil) (bb.com.br)<br>A Brazilian bank focusing on sustainability, supporting agriculture and small businesses, investing in sports, and striving for efficiency to benefit current and future generations | Banking | 🇧🇷 | 70,586 | 1808 |
| 79 | [ING](https://www.tamtam.ai/c/ing) (ing.com)<br>A pioneering, innovative global bank empowering people and businesses to achieve a better future through frictionless, sustainable banking services | Banking | 🇳🇱 Amsterdam | 68,595 |  |
| 80 | [Deutsche Telekom](https://www.tamtam.ai/c/deutsche-telekom) (telekom.com)<br>A leading global communications and information technology company with a diverse team of 206,000 colleagues creating innovative solutions for digital transformation | Telecommunications | 🇩🇪 Bonn | 67,270 |  |
| 81 | [Emirates](https://www.tamtam.ai/c/emirates) (emirates.com)<br>A multinational conglomerate based in Dubai, offering diverse career opportunities in the aviation industry with tax-free benefits and professional development | Airlines and Aviation | 🇦🇪 Dubai | 66,465 |  |
| 82 | [Ascension](https://www.tamtam.ai/c/ascension) (healthcare.ascension.org)<br>A faith-based healthcare organization focused on providing compassionate care to those in need across the US through various services and programs | Hospitals and Health Care | 🇺🇸 St. Louis | 66,381 | 1999 |
| 83 | [Verizon Wireless](https://www.tamtam.ai/c/verizon-wireless) (verizonwireless.com)<br>This company powers fast and reliable network, offers cloud and security solutions, and leads in IoT and video entertainment | Telecommunications | 🇺🇸 Basking Ridge | 65,405 |  |
| 84 | [Crédit Mutuel Alliance Fédérale](https://www.tamtam.ai/c/credit-mutuel-alliance-federale) (creditmutuel.fr)<br>Leading bancassurance provider in France, offering multi-service solutions to individuals, local professionals, and businesses of all sizes, through a vast network of sales points. | Banking | 🇫🇷 Strasbourg | 64,344 | 2018 |
| 85 | [PNC](https://www.tamtam.ai/c/pnc) (pnc.com)<br>Provides financial services focused on managing money effectively to simplify clients' financial lives and support their life goals. | Financial Services | 🇺🇸 Pittsburgh | 64,159 |  |
| 86 | [Groupe SNCF](https://www.tamtam.ai/c/groupe-sncf) (groupe-sncf.com)<br>A global leader in public transportation offering train services, passenger solutions, ticket booking, and mobility options through five divisions | Rail Transportation | 🇫🇷 La Plaine Saint-Denis | 60,749 | 1938 |
| 87 | [BMO](https://www.tamtam.ai/c/bmo) (bmo.com)<br>Financial institution offering banking services, career growth opportunities, learning programs, and a supportive culture for personal and professional success. | Financial Services | 🇨🇦 Toronto | 60,290 |  |
| 88 | [HDB Financial Services Ltd.](https://www.tamtam.ai/c/hdb-financial-services-ltd) (hdbfs.com)<br>Provides diverse financial lending products like personal, business, and vehicle loans, alongside BPO services such as collection call centers and back-office operations for individuals and businesses. | Financial Services | 🇮🇳 Mumbai | 60,142 | 2007 |
| 89 | [American Airlines](https://www.tamtam.ai/c/american-airlines) (aa.com)<br>Operate a global airline with over 1,300 aircraft, connecting customers worldwide while providing career growth and leadership opportunities. | Airlines and Aviation | 🇺🇸 Dallas-Fort Worth | 60,018 |  |
| 90 | [CAIXA](https://www.tamtam.ai/c/caixa) (caixa.gov.br)<br>Serving all of Brazil, our mission is centered around you Helping individuals with financial needs through our website Visit caixagovbr | Financial Services | 🇧🇷 Brasília | 59,741 | 1861 |
| 91 | [Generali](https://www.tamtam.ai/c/generali) (generali.com)<br>Global insurance and financial products market leader, operating in over 50 countries, with €500 billion in assets, and recognized for innovation | Insurance | 🇮🇹 Milan | 59,226 | 1831 |
| 92 | [NHS England](https://www.tamtam.ai/c/nhs-england) (england.nhs.uk)<br>This organization collaborates with NHS Improvement to enhance care delivery, transparency, and services for patients in England while prioritizing efficiency and accountability | Hospitals and Health Care | 🇬🇧 London | 59,120 | 2012 |
| 93 | [Credit Suisse](https://www.tamtam.ai/c/credit-suisse) (ubs.com)<br>A global wealth manager offering services in wealth management, banking, asset management, and investment banking, focusing on diversity and empowerment | Banking | 🇨🇭 Zurich | 59,000 | 1856 |
| 94 | [MetLife](https://www.tamtam.ai/c/metlife-new-york) (metlife.com)<br>A leading financial services company offering insurance, annuities, employee benefits, and asset management globally, focused on simplifying and meeting customers' evolving needs | Insurance | 🇺🇸 New York | 58,000 |  |
| 95 | [Lloyds Banking Group](https://www.tamtam.ai/c/lloyds-banking-group) (lloydsbankinggroup.com)<br>This company focuses on creating a more sustainable and inclusive future in the financial services industry, while supporting customers' changing needs | Financial Services | 🇬🇧 London | 57,702 |  |
| 96 | [UniCredit](https://www.tamtam.ai/c/unicredit) (unicreditgroup.eu)<br>A pan-European bank focused on empowering communities and stakeholders, delivering for clients, employees, and investors with integrity, ownership, and care | Banking | 🇮🇹 Milan | 56,878 | 1870 |
| 97 | [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 |
| 98 | [Petrobras](https://www.tamtam.ai/c/petrobras) (petrobras.com.br)<br>The company aims to provide ethical, safe, and competitive energy solutions while focusing on sustainability, environmental responsibility, and employee well-being | Oil and Gas | 🇧🇷 Rio de Janeiro | 56,267 |  |
| 99 | [La Poste Groupe](https://www.tamtam.ai/c/la-poste-groupe) (lapostegroupe.com)<br>International postal services provider delivering parcels globally while managing banking, insurance, digital trust solutions, and essential public services through a vast physical network. | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Paris | 56,037 |  |
| 100 | [BNY](https://www.tamtam.ai/c/bny) (bny.com)<br>Global financial platforms provider managing investment assets and custody services for top banks, governments, pension plans, and major corporations to accelerate growth. | Financial Services | 🇺🇸 New York | 55,654 | 1784 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

## More company lists in the world

- [The largest companies in the world](https://www.tamtam.ai/l/largest-companies-in-the-world) (415,122)
- [Multinational companies in the world](https://www.tamtam.ai/l/multinational-companies-in-the-world) (74,925)
- [Manufacturers in the world](https://www.tamtam.ai/l/manufacturers-in-the-world) (39,579)
- [Retail chains in the world](https://www.tamtam.ai/l/retail-chains-in-the-world) (35,499)
- [Companies with in-house R&D in the world](https://www.tamtam.ai/l/r-and-d-companies-in-the-world) (34,346)
- [Financial services firms in the world](https://www.tamtam.ai/l/financial-services-firms-in-the-world) (26,817)
- [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,737)
- [Education providers in the world](https://www.tamtam.ai/l/education-companies-in-the-world) (23,937)
- [IT Services and IT Consulting companies in the world](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-in-the-world) (23,571)
- [SaaS companies in the world](https://www.tamtam.ai/l/saas-companies-in-the-world) (22,459)
- [IT services companies in the world](https://www.tamtam.ai/l/it-services-companies-in-the-world) (20,934)
- [Software Development companies in the world](https://www.tamtam.ai/l/software-development-companies-in-the-world) (20,534)
- [Hardware manufacturers in the world](https://www.tamtam.ai/l/hardware-companies-in-the-world) (20,159)
- [Financial Services companies in the world](https://www.tamtam.ai/l/financial-services-companies-in-the-world) (19,958)
- [Companies with a mobile app in the world](https://www.tamtam.ai/l/companies-with-mobile-app-in-the-world) (18,922)
- [Public sector organisations in the world](https://www.tamtam.ai/l/public-sector-organisations-in-the-world) (18,493)
- [Healthcare providers in the world](https://www.tamtam.ai/l/healthcare-providers-in-the-world) (16,037)
- [Consulting firms in the world](https://www.tamtam.ai/l/consulting-firms-in-the-world) (16,009)
- [Family-owned companies in the world](https://www.tamtam.ai/l/family-owned-companies-in-the-world) (14,667)
- [Distributors and wholesalers in the world](https://www.tamtam.ai/l/distributors-and-wholesalers-in-the-world) (13,470)
- [Hospitals and Health Care companies in the world](https://www.tamtam.ai/l/hospitals-and-health-care-companies-in-the-world) (12,916)
- [Corporate groups and holding companies in the world](https://www.tamtam.ai/l/holding-companies-in-the-world) (12,864)
- [E-commerce companies in the world](https://www.tamtam.ai/l/ecommerce-companies-in-the-world) (12,013)
- [Higher Education companies in the world](https://www.tamtam.ai/l/higher-education-companies-in-the-world) (11,756)

## The same list elsewhere

- [Critical infrastructure operators in Europe](https://www.tamtam.ai/l/critical-infrastructure-operators-in-europe) (9,815)
- [Critical infrastructure operators in North America](https://www.tamtam.ai/l/critical-infrastructure-operators-in-north-america) (6,768)
- [Critical infrastructure operators in the United States](https://www.tamtam.ai/l/critical-infrastructure-operators-united-states) (5,801)
- [Critical infrastructure operators in France](https://www.tamtam.ai/l/critical-infrastructure-operators-france) (2,721)
- [Critical infrastructure operators in Asia](https://www.tamtam.ai/l/critical-infrastructure-operators-in-asia) (2,531)
- [Critical infrastructure operators in Latin America](https://www.tamtam.ai/l/critical-infrastructure-operators-in-latin-america) (2,262)
- [Critical infrastructure operators in Germany](https://www.tamtam.ai/l/critical-infrastructure-operators-germany) (1,305)
- [Critical infrastructure operators in Brazil](https://www.tamtam.ai/l/critical-infrastructure-operators-brazil) (1,201)
- [Critical infrastructure operators in the United Kingdom](https://www.tamtam.ai/l/critical-infrastructure-operators-united-kingdom) (1,195)
- [Critical infrastructure operators in India](https://www.tamtam.ai/l/critical-infrastructure-operators-india) (1,044)
- [Critical infrastructure operators in Africa](https://www.tamtam.ai/l/critical-infrastructure-operators-in-africa) (868)
- [Critical infrastructure operators in Canada](https://www.tamtam.ai/l/critical-infrastructure-operators-canada) (767)
- [Critical infrastructure operators in the Netherlands](https://www.tamtam.ai/l/critical-infrastructure-operators-netherlands) (765)
- [Critical infrastructure operators in the Middle East](https://www.tamtam.ai/l/critical-infrastructure-operators-in-the-middle-east) (718)
- [Critical infrastructure operators in Italy](https://www.tamtam.ai/l/critical-infrastructure-operators-italy) (622)
- [Critical infrastructure operators in Spain](https://www.tamtam.ai/l/critical-infrastructure-operators-spain) (517)
- [Critical infrastructure operators in Australia](https://www.tamtam.ai/l/critical-infrastructure-operators-australia) (450)
- [Critical infrastructure operators in Switzerland](https://www.tamtam.ai/l/critical-infrastructure-operators-switzerland) (378)
- [Critical infrastructure operators in Indonesia](https://www.tamtam.ai/l/critical-infrastructure-operators-indonesia) (368)
- [Critical infrastructure operators in Belgium](https://www.tamtam.ai/l/critical-infrastructure-operators-belgium) (354)
- [Critical infrastructure operators in Turkey](https://www.tamtam.ai/l/critical-infrastructure-operators-turkey) (282)
- [Critical infrastructure operators in Sweden](https://www.tamtam.ai/l/critical-infrastructure-operators-sweden) (277)
- [Critical infrastructure operators in Colombia](https://www.tamtam.ai/l/critical-infrastructure-operators-colombia) (249)
- [Critical infrastructure operators in Norway](https://www.tamtam.ai/l/critical-infrastructure-operators-norway) (220)

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Source: https://www.tamtam.ai/l/critical-infrastructure-operators-in-the-world