# List of critical infrastructure operators in Romania
Tamtam tracks 30 critical infrastructure operators headquartered in Romania. This list ranks all of them by number of employees on LinkedIn, led by Banca Transilvania, OMV Petrom and BCR. Their median headcount is 935. Half of them were founded in 1994 or later. The most common headquarters are Bucharest (22).
These Romanian companies operate in critical infrastructure sectors, predominantly banking and finance, but also energy, telecommunications, and healthcare. The companies are generally large, well-established firms. Banca Transilvania supports entrepreneurs with innovative banking solutions. OMV Petrom is an integrated energy producer in Southeastern Europe. BCR offers universal financial services, while Telekom Romania Mobile provides mobile telecommunication services. MedLife operates an extensive private medical network.
A clear pattern is the concentration of headquarters in Bucharest, with a few exceptions like Banca Transilvania in Cluj-Napoca and Delgaz Grid in TΓ’rgu MureΘ. The founding dates range from the late 19th century, such as Electrica (1898) and the National Bank of Romania (1880), to more recent establishments like UniCredit Bank Romania (2007) and Telekom Romania Mobile (2014), indicating a mix of historical institutions and newer entrants.
π·π΄ Romania Β· 30 companies Β· Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Banca Transilvania](https://www.tamtam.ai/c/banca-transilvania) (bancatransilvania.ro)
Financial institution supporting entrepreneurs with innovative banking solutions, digital services, and strong community involvement in sports and culture. | Banking | π·π΄ Cluj-Napoca | 7,520 | 1993 |
| 2 | [OMV Petrom](https://www.tamtam.ai/c/omv-petrom) (omvpetrom.com)
Largest integrated energy producer in Southeastern Europe, hydrocarbon production, refining capacity, power plant operation, and retail fuel stations. | Oil and Gas | π·π΄ Bucharest | 6,697 | 1991 |
| 3 | [BCR](https://www.tamtam.ai/c/bcr-bucharest) (bcr.ro)
Universal financial group providing banking, leasing, investment funds, and private pensions while delivering financial education programs and housing credit products across Romania. | Banking | π·π΄ Bucharest | 6,608 | 1990 |
| 4 | [Raiffeisen Bank Romania](https://www.tamtam.ai/c/raiffeisen-bank-romania) (raiffeisen.ro)
Provides comprehensive banking products and services to individuals, SMEs, and large corporations through multiple distribution channels nationwide. | Banking | π·π΄ Bucharest | 5,901 | 1998 |
| 5 | [BRD - Groupe Societe Generale](https://www.tamtam.ai/c/brd-groupe-societe-generale) (brd.ro)
Financial institution providing banking, investment, leasing, and insurance services to a wide range of customers, including individuals, SMEs, and corporations. | Banking | π·π΄ Bucharest | 5,623 | 1990 |
| 6 | [Telekom Romania Mobile](https://www.tamtam.ai/c/telekom-romania-mobile) (mobile.telekom.ro)
Telekom Romania Mobile offers mobile services focused on connecting people's worlds seamlessly and simply, without any fixed ideas | Telecommunications | π·π΄ Bucharest | 3,306 | 2014 |
| 7 | [UniCredit Bank Romania](https://www.tamtam.ai/c/unicredit-bank-romania) (unicredit.ro)
Pan-European bank supporting communities, delivering value to stakeholders, fostering integrity, responsibility, and collaboration across 13 European banks. | Banking | π·π΄ Bucharest | 3,276 | 2007 |
| 8 | [Rompetrol (KMG International)](https://www.tamtam.ai/c/rompetrol-kmg-international) (rompetrol.com)
A multinational energy company with 5,000 employees in 11 countries, focused on providing sustainable energy solutions through refining, petrochemicals, and retail activities | Oil and Gas | π·π΄ Bucharest | 2,593 | 1974 |
| 9 | [MedLife](https://www.tamtam.ai/c/medlife) (medlife.ro)
Extensive private medical network offering diagnostics, treatment, prevention, wellness, and hospitalization services across Romania with advanced technology. | Hospitals and Health Care | π·π΄ Bucharest | 2,157 | 1994 |
| 10 | [ING Romania](https://www.tamtam.ai/c/ing-romania) (ing.ro)
A global financial institution focused on empowering individuals and businesses with innovative banking solutions, emphasizing work-life balance and career development | Banking | π·π΄ Sector 1 | 1,989 | |
| 11 | [Electrica](https://www.tamtam.ai/c/electrica) (electrica.ro)
Electricity distribution, supply, and production in Romania, with significant presence in energy services and publicly listed on stock exchanges. | Utilities | π·π΄ Bucharest | 1,907 | 1898 |
| 12 | [Allianz-Tiriac Asigurari](https://www.tamtam.ai/c/allianz-tiriac-asigurari) (allianztiriac.ro)
Providing comprehensive insurance products and financial planning services including auto, home, travel, life, health, liability, and private pension management. | Insurance | π·π΄ Bucharest | 1,279 | 1994 |
| 13 | [National Bank of Romania](https://www.tamtam.ai/c/national-bank-of-romania) (bnr.ro)
The central bank of Romania ensures price stability, conducts monetary and exchange rate policies, regulates credit institutions, issues currency, and manages international reserves | Banking | π·π΄ Bucharest | 1,173 | 1880 |
| 14 | [ASIROM - Vienna Insurance Group](https://www.tamtam.ai/c/asirom-vienna-insurance-group) (asirom.ro)
Providing accessible and secure insurance products and services with a focus on simplicity, customer time, and digital and physical resources. | Insurance | π·π΄ Bucharest | 970 | |
| 15 | [Delgaz Grid](https://www.tamtam.ai/c/delgaz-grid) (delgaz.ro)
distribution of electricity and natural gas through extensive networks serving over three million customers across multiple Romanian counties | Electric Power Transmission, Control, and Distribution | π·π΄ TΓ’rgu MureΘ | 935 | |
| 16 | [CFR Calatori S.A.](https://www.tamtam.ai/c/cfr-calatori-s-a) (cfrcalatori.ro)
A Romanian company established by the government to provide railway passenger transport services in Bucharest and throughout the country | Truck Transportation | π·π΄ Bucharest | 877 | 1998 |
| 17 | [PPC Romania](https://www.tamtam.ai/c/ppc-romania) (ppcenergy.ro)
Leading energy provider in Southeast Europe serving millions with over 35 TWh, focusing on community, environment, and efficiency. | Utilities | π·π΄ Sector 3 | 800 | |
| 18 | [S.N.G.N. Romgaz S.A.](https://www.tamtam.ai/c/s-n-g-n-romgaz-s-a) (romgaz.ro)
Largest Romanian natural gas producer and supplier, geological exploration, methane production, underground storage, electricity generation, offshore concession management. | Oil and Gas | π·π΄ | 785 | 1909 |
| 19 | [Alpha Bank Romania](https://www.tamtam.ai/c/alpha-bank-romania) (alphabank.ro)
Financial institution providing modern banking products and services for individuals, SMEs, and corporates with nationwide presence. | Banking | π·π΄ Bucharest | 769 | 1994 |
| 20 | [Apa Nova BucureΘti - Veolia](https://www.tamtam.ai/c/apa-nova-bucuresti-veolia) (apanovabucuresti.ro)
Management of urban water supply and wastewater systems, including treatment, distribution, and infrastructure modernization with significant investments. | Utilities | π·π΄ Bucharest | 697 | 2000 |
| 21 | [Intesa Sanpaolo Bank Romania](https://www.tamtam.ai/c/intesa-sanpaolo-bank-romania) (intesasanpaolobank.ro)
Financial institution offering banking products, services to retail customers, SMEs, and corporations in Romania and internationally, with a focus on growth and quality. | Banking | π·π΄ Bucharest | 673 | 1999 |
| 22 | [Hidroelectrica](https://www.tamtam.ai/c/hidroelectrica) (hidroelectrica.ro)
Leading renewable energy producer operating hydroelectric plants, wind farms, supplying electricity wholesale and retail, ensuring grid security in Romania. | Utilities | π·π΄ Bucharest | 667 | 2000 |
| 23 | [Garanti BBVA Romania](https://www.tamtam.ai/c/garanti-bbva-romania) (garantibbva.ro)
Provides comprehensive banking products, leasing solutions, and fleet management services for retail, SME, and corporate clients through digital platforms and national branch networks. | Banking | π·π΄ Bucharest | 653 | |
| 24 | [ENGIE Romania](https://www.tamtam.ai/c/engie-romania) (engie.ro)
ENGIE is committed to creating smart solutions, unique experiences, and stronger communities through the mobilization of all energies | Utilities | π·π΄ Bucharest | 622 | |
| 25 | [Generali Romania](https://www.tamtam.ai/c/generali-romania) (generali.ro)
Offers comprehensive insurance policies and financial protection solutions for individual and corporate clients within the Romanian market through specialized coverage plans. | Insurance | π·π΄ Bucharest | 482 | 1993 |
| 26 | [Salt Bank](https://www.tamtam.ai/c/salt-bank) (salt.bank)
Digital bank offering innovative financial services tailored for dynamic customers seeking rapid progress and more than traditional banking solutions. | Banking | π·π΄ Bucharest | 466 | 2023 |
| 27 | [C.N. CFR S.A.](https://www.tamtam.ai/c/c-n-cfr-s-a) (cfr.ro)
A transportation company based in Bucharest, Romania, specializing in trucking and railroad services for freight and logistics operations | Truck Transportation | π·π΄ Bucharest | 431 | |
| 28 | [TRANSGAZ SA](https://www.tamtam.ai/c/transgaz-sa) (transgaz.ro)
Operator of national gas transmission system, managing transmission, international transit, dispatching, and research-design in natural gas field under Romanian law. | Oil and Gas | π·π΄ | 391 | 2000 |
| 29 | [Vista Bank Romania](https://www.tamtam.ai/c/vista-bank-romania) (vistabank.ro)
Universal bank offering personalized, high-quality financial solutions to individuals and companies, growing through acquisitions and organic expansion. | Banking | π·π΄ | 375 | 1995 |
| 30 | [Enel RomΓ’nia](https://www.tamtam.ai/c/enel-romania) (ppcenergy.ro)
Leading energy provider in Southeast Europe serving millions of customers with a focus on community responsibility and environmental sustainability. | Utilities | π·π΄ Sector 3 | 337 | |
## 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 Romania
- [The largest companies in Romania](https://www.tamtam.ai/l/largest-companies-romania) (183)
- [Multinational companies in Romania](https://www.tamtam.ai/l/multinational-companies-romania) (55)
- [Retail chains in Romania](https://www.tamtam.ai/l/retail-chains-romania) (43)
- [Companies with a mobile app in Romania](https://www.tamtam.ai/l/companies-with-mobile-app-romania) (31)
## The same list elsewhere
- [Critical infrastructure operators in the world](https://www.tamtam.ai/l/critical-infrastructure-operators-in-the-world) (23,312)
- [Critical infrastructure operators in Europe](https://www.tamtam.ai/l/critical-infrastructure-operators-in-europe) (9,815)
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Source: https://www.tamtam.ai/l/critical-infrastructure-operators-romania