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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 590,000 | ||||
| 2 |
UnitedHealth Groupunitedhealthgroup.com
Health care and well-being company focused on improving access, affordability, outcomes, and experiences through technology, data, and high-quality health benefits |
380,000 | |||
| 3 |
Bank of Americabankofamerica.com
Global financial institution providing comprehensive banking, investing, and asset management services to individuals, small businesses, and large corporations through diverse risk management products. |
304,000 | |||
| 4 |
NHSwww.nhs.uk
It provides comprehensive healthcare services to UK residents, employing over 1.5 million staff and ensuring free access at the point of use. |
252,871 | |||
| 5 |
J.P. Morganjpmorgan.com
Providing comprehensive financial services and wealth management solutions to clients worldwide, prioritizing client interests and long-term relationships. |
240,000 | |||
| 6 |
Wells Fargowellsfargo.com
A diversified financial services company offering banking, investment, mortgage products, and more through numerous locations and digital platforms Serving customers globally |
234,570 | |||
| 7 |
JPMorganChasejpmorganchase.com
Global financial institution, managing assets and investments, offering business advice, strategies, and innovative banking solutions to diverse clients worldwide. |
231,537 | |||
| 8 |
VINCI Concessionsvinci-concessions.com
A global leader in mobility infrastructure, designing, financing, building, operating, and maintaining airports, highways, and railway projects in 23 countries |
219,000 | |||
| 9 |
VINCI Airportsvinci-airports.com
Operates, develops, finances, builds airports globally, optimizing performance, modernizing infrastructure, and driving environmental transition with a net-zero emissions goal. |
219,000 | |||
| 10 | 213,593 | ||||
| 11 | 208,511 | ||||
| 12 |
U.S. Department of Veterans Affairsva.gov
Recruitment of skilled employees dedicated to providing respectful and appropriate care and support services for United States veterans. |
202,010 | |||
| 13 |
Reliance Industries Limitedril.com
Company's activities span hydrocarbon exploration and production, petroleum refining, petrochemicals, retail, and telecommunications. Committed to innovation-led, exponential growth. |
200,730 | |||
| 14 | 197,879 | ||||
| 15 | 193,793 | ||||
| 16 | 193,709 | ||||
| 17 |
Comcastcomcast.com
Delivering broadband, mobile, and video products, along with entertainment, sports, news, and theme park experiences; driven by passionate creators and innovators |
189,000 | |||
| 18 | 188,351 | ||||
| 19 |
ICICI Bankbank.in
Provides diverse banking products and services to individuals, SMEs, and corporates through branches, ATMs, mobile, internet, and phone channels. |
181,145 | |||
| 20 |
aramcoaramco.com
A leading producer of energy and chemicals, providing uninterrupted supply around the globe and working towards a low carbon economy |
170,467 | |||
| 21 | 168,435 | ||||
| 22 |
United States Postal Serviceusps.com
Delivers mail and packages to over 157 million addresses nationwide, connecting every American, every door, every business, everywhere, funded by sales, not tax dollars. |
159,003 | |||
| 23 |
BNP Paribasgroup.bnpparibas
Leading bank in Europe, provides financial solutions for individuals, businesses, and institutions, including financing, investment, savings, and protection insurance across 64 countries. |
155,716 | |||
| 24 |
University of Californiajobs.universityofcalifornia.edu
Educating top minds, advancing research, engaging communities, supporting economy, improving health, protecting environment, and driving innovation across California. |
152,503 | |||
| 25 |
HCA Healthcaredpxmedcity.net
A healthcare organization with 186 hospitals and 2,300 sites, focused on providing quality care, advancing science, and impacting communities positively |
150,409 | |||
| 26 |
Allianzallianz.com
A global insurance and asset management group serving over 100 million customers in 70+ countries, committed to sustainability and employee well-being |
150,057 | |||
| 27 | 148,548 | ||||
| 28 |
Orangeorange.com
A leading global telecommunications operator offering services to millions of customers and multinational companies across 26 countries |
146,935 | |||
| 29 |
Vodafonevodafone.com
Using technology to connect people globally, drive social change, and improve lives while emphasizing the importance of humanity and collaboration |
142,740 | |||
| 30 |
Walgreens Boots Alliancewalgreens.com
Integrated healthcare and retail company operating thousands of pharmacy locations, providing medicines, health services, beauty products, and digital convenience globally. |
141,576 | |||
| 31 |
CVS Healthcvshealth.com
Providing accessible health care services, managing chronic diseases, supporting medication compliance, and improving community health through local and digital channels. |
139,212 | |||
| 32 |
Kaiser Permanentehealthy.kaiserpermanente.org
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 |
137,397 | |||
| 33 |
Verizonverizon.com
A global human network that values creativity, connection, and flexibility, dedicated to making an impact and moving the world forward |
137,000 | |||
| 34 | 130,572 | ||||
| 35 |
Santandersantander.com
Leading global bank offering retail, corporate, investment banking, wealth management, insurance, and payment services to diverse clients worldwide. |
129,701 | |||
| 36 |
Fresenius Medical Carefreseniusmedicalcare.com
Global leader in renal disease products and services, providing tailored dialysis treatments for improved quality of life for patients worldwide |
128,000 | |||
| 37 |
State Bank of Indiabank.in
Leading public sector bank with extensive branch network, offering specialized financial services to corporates, SMEs, NRIs, and retail customers. |
122,721 | |||
| 38 |
Telefónicatelefonica.com
Leading global telecommunications company providing advanced infrastructure, innovative digital and data services, focusing on secure, cutting-edge technology and social impact. |
121,569 | |||
| 39 | 117,814 | ||||
| 40 | 113,067 | ||||
| 41 |
Itaú Unibancoitau.com.br
Latin America's largest bank focusing on empowering people's transformation through news, work environment details, opportunities, and trends sharing |
112,811 | |||
| 42 |
State Farmstatefarm.com
Providing insurance and financial solutions to help people manage risks, recover from unexpected events, and achieve their dreams. |
112,234 | |||
| 43 |
Lufthansalufthansa.com
Connecting passengers globally, shaping sustainable aviation, offering premium travel experiences, and enhancing customer comfort with advanced technology and services. |
110,000 | |||
| 44 |
TDcareers.td.com
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 |
105,476 | |||
| 45 |
Morgan Stanleymorganstanley.com
Global financial services firm providing investment banking, securities, wealth and investment management services to corporations, governments, institutions, and individuals through strategic capital allocation. |
103,041 | |||
| 46 | 99,801 | ||||
| 47 | 99,395 | ||||
| 48 |
airtelairtel.com
Provides global connectivity, developing infrastructure for cutting-edge technologies like 5G, IoT, and enterprise solutions, contributing to 'Digital India' with a vast subscriber base. |
99,135 | |||
| 49 | 99,088 | ||||
| 50 |
Spectrumspectrum.net
A leading broadband connectivity company offering internet, TV, mobile, voice, and tailored advertising services to residential, business, and government customers |
97,651 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 51 |
Intesa Sanpaologroup.intesasanpaolo.com
Leading Italian banking group with international presence, focusing on wealth management, advisory, and digital solutions Committed to impact financing and supporting those in need |
97,000 | |||
| 52 |
T-Mobilecareers.t-mobile.com
Leading US wireless provider delivering advanced 4G LTE and nationwide 5G networks, prioritizing customer value, service excellence, and innovation in Bellevue, Washington |
96,232 | |||
| 53 |
Humanahumana.com
This company focuses on delivering personalized healthcare experiences, creating innovative solutions, and prioritizing the well-being of individuals and communities |
96,000 | |||
| 54 |
American Expressamericanexpress.com
A globally integrated payments company supporting customers' financial confidence, promoting commerce, and providing experiences that enrich lives and drive business success |
94,909 | |||
| 55 | 93,235 | ||||
| 56 |
Banco Bradescobanco.bradesco
A leading private financial institution focusing on providing efficient solutions, products, and services to promote social mobility and sustainable development |
89,132 | |||
| 57 |
U.S. Bankusbank.com
A leading commercial bank offering a blend of personal service and digital tools to serve millions of clients worldwide |
87,474 | |||
| 58 |
Scotiabankscotiabank.com
A global financial institution serving customers, families, and communities by providing advice, products, and services to help them achieve success |
87,065 | |||
| 59 |
Kotak Mahindra Bankkotak.com
Leading financial conglomerate offering banking, stock broking, mutual funds, insurance, and investment services across India and globally. |
86,827 | |||
| 60 |
TotalEnergiestotalenergies.com
Global energy company with 105,000 employees focused on energy transition, safety, ethics, innovation, and career development worldwide. |
86,609 | |||
| 61 | 85,000 | ||||
| 62 |
Capital Onecapitalone.com
Innovative bank focused on financial inclusion, creating tools to improve customers' lives, and encouraging a work-life balance for employees |
82,863 | |||
| 63 |
Barclayshome.barclays
A British universal bank with global presence, offering consumer banking, payments, corporate and investment banking services, supported by technology and operational solutions |
82,417 | |||
| 64 |
Deutsche Bankdb.com
Offers financial services to companies, governments, institutions, small businesses, and individuals globally. Focuses on corporate, private, and investment banking, plus asset management. |
81,792 | |||
| 65 |
PT Pertamina (Persero)pertamina.com
Engaged in integrated energy sectors, including upstream, midstream, downstream, and renewable energy, with over 50 years of experience. |
80,882 | |||
| 66 |
A.P. Moller - Maerskmaersk.com
An integrated transport and logistics company connecting the world for customers and society, enabling trade, growth, and thriving across 130 countries. |
80,345 | |||
| 67 |
Standard Charteredsc.com
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 |
79,401 | |||
| 68 |
Groupe Crédit Agricolecredit-agricole.com
Leading European retail bank offering comprehensive financial services including loans, insurance, asset management, corporate banking, and customer-focused solutions. |
76,287 | |||
| 69 |
Goldman Sachsgoldmansachs.com
Global financial institution providing expert capital markets services, investment banking, and asset management for clients through partnership, integrity, and world-class operational excellence. |
76,000 | |||
| 70 |
Delta Air Linesdelta.com
Leading global airline focused on safety, innovation, operational excellence, and award-winning customer service connecting people and cultures worldwide. |
75,854 | |||
| 71 |
United Airlinesunited.com
Leading airline with over 90,000 employees focused on customer service, sustainability, and teamwork, currently hiring 15,000 new team members in 2023 |
75,520 | |||
| 72 |
DSV - Global Transport and Logisticsdsv.com
Global supply chain solutions provider with a focus on customer experience, sustainability, diversity, and integrity, spanning over 80 countries |
75,000 | |||
| 73 | 73,712 | ||||
| 74 |
Life Insurance Corporation of Indialicindia.in
Provides diverse life insurance products including health, pension, ULIPs, group schemes, and micro insurance with extensive agent network. |
73,235 | |||
| 75 |
ExxonMobilcorporate.exxonmobil.com
Scientists and engineers pioneering research, pursuing new technologies to reduce emissions, creating efficient fuels, meeting global energy needs, aiming net-zero emissions by 2050. |
73,163 | |||
| 76 | 71,000 | ||||
| 77 |
Standard Bank Groupstandardbank.com
Financial services provider focused on inclusive, sustainable economic development and growth across sub-Saharan Africa with ethical business practices. |
70,728 | |||
| 78 |
Banco do Brasilbb.com.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 |
70,586 | |||
| 79 | 68,595 | ||||
| 80 |
Deutsche Telekomtelekom.com
A leading global communications and information technology company with a diverse team of 206,000 colleagues creating innovative solutions for digital transformation |
67,270 | |||
| 81 |
Emiratesemirates.com
A multinational conglomerate based in Dubai, offering diverse career opportunities in the aviation industry with tax-free benefits and professional development |
66,465 | |||
| 82 |
Ascensionhealthcare.ascension.org
A faith-based healthcare organization focused on providing compassionate care to those in need across the US through various services and programs |
66,381 | |||
| 83 |
Verizon Wirelessverizonwireless.com
This company powers fast and reliable network, offers cloud and security solutions, and leads in IoT and video entertainment |
65,405 | |||
| 84 |
Crédit Mutuel Alliance Fédéralecreditmutuel.fr
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. |
64,344 | |||
| 85 | 64,159 | ||||
| 86 |
Groupe SNCFgroupe-sncf.com
A global leader in public transportation offering train services, passenger solutions, ticket booking, and mobility options through five divisions |
60,749 | |||
| 87 | 60,290 | ||||
| 88 |
HDB Financial Services Ltd.hdbfs.com
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. |
60,142 | |||
| 89 |
American Airlinesaa.com
Operate a global airline with over 1,300 aircraft, connecting customers worldwide while providing career growth and leadership opportunities. |
60,018 | |||
| 90 |
CAIXAcaixa.gov.br
Serving all of Brazil, our mission is centered around you Helping individuals with financial needs through our website Visit caixagovbr |
59,741 | |||
| 91 |
Generaligenerali.com
Global insurance and financial products market leader, operating in over 50 countries, with €500 billion in assets, and recognized for innovation |
59,226 | |||
| 92 |
NHS Englandengland.nhs.uk
This organization collaborates with NHS Improvement to enhance care delivery, transparency, and services for patients in England while prioritizing efficiency and accountability |
59,120 | |||
| 93 |
Credit Suisseubs.com
A global wealth manager offering services in wealth management, banking, asset management, and investment banking, focusing on diversity and empowerment |
59,000 | |||
| 94 |
MetLifemetlife.com
A leading financial services company offering insurance, annuities, employee benefits, and asset management globally, focused on simplifying and meeting customers' evolving needs |
58,000 | |||
| 95 |
Lloyds Banking Grouplloydsbankinggroup.com
This company focuses on creating a more sustainable and inclusive future in the financial services industry, while supporting customers' changing needs |
57,702 | |||
| 96 |
UniCreditunicreditgroup.eu
A pan-European bank focused on empowering communities and stakeholders, delivering for clients, employees, and investors with integrity, ownership, and care |
56,878 | |||
| 97 |
Northwell Healthnorthwell.edu
Largest New York healthcare system with hospitals, outpatient facilities, research institutes, medical education, and extensive patient care services. |
56,405 | |||
| 98 |
Petrobraspetrobras.com.br
The company aims to provide ethical, safe, and competitive energy solutions while focusing on sustainability, environmental responsibility, and employee well-being |
56,267 | |||
| 99 |
La Poste Groupelapostegroupe.com
International postal services provider delivering parcels globally while managing banking, insurance, digital trust solutions, and essential public services through a vast physical network. |
56,037 | |||
| 100 | 55,654 | ||||
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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 Nov 12, 2026.
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The same list elsewhere
- Critical infrastructure operators in Europe 9,815
- Critical infrastructure operators in North America 6,768
- Critical infrastructure operators in the United States 5,801
- Critical infrastructure operators in France 2,721
- Critical infrastructure operators in Asia 2,531
- Critical infrastructure operators in Latin America 2,262
- Critical infrastructure operators in Germany 1,305
- Critical infrastructure operators in Brazil 1,201
- Critical infrastructure operators in the United Kingdom 1,195
- Critical infrastructure operators in India 1,044
- Critical infrastructure operators in Africa 868
- Critical infrastructure operators in Canada 767
- Critical infrastructure operators in the Netherlands 765
- Critical infrastructure operators in the Middle East 718
- Critical infrastructure operators in Italy 622
- Critical infrastructure operators in Spain 517
- Critical infrastructure operators in Australia 450
- Critical infrastructure operators in Switzerland 378
- Critical infrastructure operators in Indonesia 368
- Critical infrastructure operators in Belgium 354
- Critical infrastructure operators in Turkey 282
- Critical infrastructure operators in Sweden 277
- Critical infrastructure operators in Colombia 249
- Critical infrastructure operators in Norway 220