# Top 29 critical infrastructure operators in Estonia
Tamtam tracks 29 critical infrastructure operators headquartered in Estonia. This list ranks all of them by number of employees on LinkedIn, led by Luminor Group, Swedbank Estonia and EMT. Their median headcount is 343. Half of them were founded in 1999 or later. The most common headquarters are Tallinn (25).
This list features large critical infrastructure operators in Estonia, predominantly based in Tallinn. These companies are primarily active in banking, financial services, and telecommunications, alongside other essential sectors. Examples include Luminor Group, providing banking services across the Baltics; EMT, a leader in Estonian mobile communication; and Eesti Energia, an international energy company focused on renewable energy and sustainability. The list also includes Tallink Grupp, which operates passenger and cargo transport services in the Baltic Sea.
A notable pattern is the concentration of these critical infrastructure operators in Estonia's capital, Tallinn. Many of these companies, such as LHV, founded in 1999, and Bigbank, established in 1992, have a history spanning several decades, indicating established operations within their respective fields.
πͺπͺ Estonia Β· 29 companies Β· Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Luminor Group](https://www.tamtam.ai/c/luminor-group) (luminor.ee)
Providing accessible, fast, and reliable banking services to individuals and businesses across the Baltic region with local expertise. | Banking | πͺπͺ Tallinn | 1,799 | 2017 |
| 2 | [Swedbank Estonia](https://www.tamtam.ai/c/swedbank-estonia) (swedbank.ee)
A leading bank in the Nordic and Baltic countries, focusing on simplicity, openness, and responsibility to help customers grow financially | Financial Services | πͺπͺ Tallinn | 1,278 | |
| 3 | [EMT](https://www.tamtam.ai/c/emt) (telia.ee)
Leader in Estonian mobile communication sector with top coverage, product development, and customer service Part of telecom group with global reach | Telecommunications | πͺπͺ Tallinn | 1,011 | |
| 4 | [LHV](https://www.tamtam.ai/c/lhv) (lhv.ee)
A leading financial group in Estonia with banking, asset management, and insurance subsidiaries, offering services to over 390,000 customers | Financial Services | πͺπͺ Tallinn | 961 | 1999 |
| 5 | [Eesti Energia](https://www.tamtam.ai/c/eesti-energia) (enefit.ee)
International energy company increasing renewable energy production, promoting sustainability, and transforming shale industry into circular economy-based chemical industry. | Consumer Services | πͺπͺ Tallinn | 818 | 1939 |
| 6 | [Tallink Grupp](https://www.tamtam.ai/c/tallink-grupp) (tallink.com)
Passenger and cargo transport services in the Baltic Sea region, operating ferries, hotels, and Burger King restaurants in Baltics. | Travel Arrangements | πͺπͺ Tallinn | 703 | 1989 |
| 7 | [Omniva](https://www.tamtam.ai/c/omniva) (omniva.ee)
International logistics provider with a focus on cross-border e-commerce, offering delivery services in the Baltics and beyond, with a large network of partners | Transportation, Logistics, Supply Chain and Storage | πͺπͺ Tallinn | 641 | |
| 8 | [eu-LISA](https://www.tamtam.ai/c/eu-lisa) (eulisa.europa.eu)
Operates and manages large-scale IT systems for EU border management, asylum, migration policies, and criminal records information to ensure interoperability | IT Services and IT Consulting | πͺπͺ Tallinn | 588 | 2011 |
| 9 | [Bigbank](https://www.tamtam.ai/c/bigbank) (jobs.bigbank.eu)
Specializing in term deposits and consumer loans, this bank operates across multiple countries, offering personalized services to clients | Banking | πͺπͺ Tallinn | 531 | 1992 |
| 10 | [PΓ΅hja-Eesti Regionaalhaigla](https://www.tamtam.ai/c/pohja-eesti-regionaalhaigla) (regionaalhaigla.ee)
A leading hospital in Estonia with a mission to invest in people's health in the Northern region | Hospitals and Health Care | πͺπͺ Tallinn | 480 | 2005 |
| 11 | [Elisa Eesti AS](https://www.tamtam.ai/c/elisa-eesti-as) (elisa.ee)
A leading provider of telecommunication and ICT services in Estonia, offering mobile, internet, TV services, and IT infrastructure solutions for businesses and public sector | Telecommunications | πͺπͺ Tallinn | 419 | |
| 12 | [SEB Eesti](https://www.tamtam.ai/c/seb-eesti) (seb.ee)
Modern universal bank focusing on long-term client relationships, providing financial tools and advice to individuals and businesses in Estonia. | Financial Services | πͺπͺ Tallinn | 402 | |
| 13 | [Inbank](https://www.tamtam.ai/c/inbank) (inbank.eu)
A fintech with EU banking license, connecting merchants, consumers, and financial institutions on an embedded finance platform Active contracts, deposits in Europe | Banking | πͺπͺ Tallinn | 392 | 2010 |
| 14 | [ENEFIT](https://www.tamtam.ai/c/enefit) (enefit.com)
An international energy provider offering electricity, gas, and liquid fuels in the Baltic States, Finland, Poland, and beyond Commitment to environmentally-friendly energy solutions | Consumer Services | πͺπͺ Tallinn | 388 | 1939 |
| 15 | [Tartu University Hospital](https://www.tamtam.ai/c/tartu-university-hospital) (kliinikum.ee)
Leading healthcare provider in Estonia offering a wide range of medical specialties, including prenatal care, organ transplants, and education for healthcare professionals | Hospitals and Health Care | πͺπͺ Tartu | 343 | |
| 16 | [Ida-Tallinna Keskhaigla](https://www.tamtam.ai/c/ida-tallinna-keskhaigla) (itk.ee)
A leading hospital in Tallinn with seven clinics offering diagnostic, surgical, rehabilitation, and nursing services, focusing on patient-centered innovative healthcare | Hospitals and Health Care | πͺπͺ Tallinn | 342 | 1785 |
| 17 | [Coop Pank AS](https://www.tamtam.ai/c/coop-pank-as) (cooppank.ee)
Estonian bank serving tens of thousands of Estonians, focusing on individuals and small to medium-sized businesses Offers simple everyday banking and financing products | Banking | πͺπͺ City Centre | 314 | 1992 |
| 18 | [Politsei- ja Piirivalveamet](https://www.tamtam.ai/c/politsei-ja-piirivalveamet) (karjaar.politsei.ee)
An organization offering a variety of roles in law enforcement and related fields, emphasizing a strong sense of community and dedicated employees | Law Enforcement | πͺπͺ Tallinn | 302 | |
| 19 | [Elering](https://www.tamtam.ai/c/elering) (elering.ee)
An integrated operator connecting electricity and gas producers, network operators, and consumers, ensuring high-quality energy supply with reasonable costs | Oil and Gas | πͺπͺ Tallinn | 228 | 2010 |
| 20 | [Registrite ja InfosΓΌsteemide Keskus (RIK) // Centre of Registers and Information Systems](https://www.tamtam.ai/c/registrite-ja-infosusteemide-keskus-rik-centre-of-registers-and-information) (rik.ee)
An experienced developer and administrator of public sector IT-systems, providing innovative e-services for efficient governmental administration, law, and criminal jurisdiction worldwide | IT Services and IT Consulting | πͺπͺ Tallinn | 213 | 1994 |
| 21 | [Riigi InfosΓΌsteemi Amet // Estonian Information System Authority (NCSC-EE)](https://www.tamtam.ai/c/riigi-infosusteemi-amet-estonian-information-system-authority-ncsc-ee) (ria.ee)
National competence center for digital infrastructure, cybersecurity, e-government services, managing Internet network, securing e-elections, and promoting Estonian digital identity globally. | IT Services and IT Consulting | πͺπͺ Tallinn | 202 | 2011 |
| 22 | [Tallinn Airport (TLL)](https://www.tamtam.ai/c/tallinn-airport-tll) (airport.ee)
Operates and develops airports in Estonia, with a focus on enhancing passenger experience and providing services to airlines and cargo companies | Airlines and Aviation | πͺπͺ Tallinn | 199 | 1936 |
| 23 | [AS Eesti Raudtee / Estonian Railways Ltd](https://www.tamtam.ai/c/as-eesti-raudtee-estonian-railways-ltd) (evr.ee)
State-owned railway operator managing railway administration, infrastructure maintenance, traffic management, and cross-border cooperation for smooth operation and development since 2009 | Rail Transportation | πͺπͺ Tallinn | 185 | 1870 |
| 24 | [ERGO Insurance SE (ERGO Eesti)](https://www.tamtam.ai/c/ergo-insurance-se-ergo-eesti) (ergo.ee)
Offers a wide range of insurance products including life, health, pension, and asset insurance through an extensive sales network in Estonia | Insurance | πͺπͺ Tallinn | 181 | |
| 25 | [CF&S Group](https://www.tamtam.ai/c/cf-and-s-group) (cfs.net)
A professional logistics company offering road, railway, sea, and air transport solutions with a focus on efficiency, flexibility, and cutting-edge technology | Transportation, Logistics, Supply Chain and Storage | πͺπͺ Tallinn | 87 | 1997 |
| 26 | [Tallinna Linnatransport](https://www.tamtam.ai/c/tallinna-linnatransport) (tlt.ee)
The company aims to provide convenient and eco-friendly urban transportation options, serving over 100 million passengers annually with a focus on public transport services | Urban Transit Services | πͺπͺ MustamΓ€e | 79 | 2012 |
| 27 | [Citadele pank](https://www.tamtam.ai/c/citadele-pank) (cblgroup.com)
Universal bank offering a wide range of banking products, wealth management, insurance, leasing, and innovative financial technology services mainly in the Baltic region | Banking | πͺπͺ Tallinn | 73 | 2010 |
| 28 | [Elelevi](https://www.tamtam.ai/c/elelevi) (elelevi.ee)
A company that generates renewable energy and operates public electric vehicle charging stations | Solar Electric Power Generation | πͺπͺ Viljandi | 4 | 2017 |
| 29 | [Enefit Volt](https://www.tamtam.ai/c/enefit-volt) (enefitvolt.com)
Estonia's largest electric vehicle public charging network with fast chargers, home & business solutions, and green energy focus for a sustainable future | Consumer Services | πͺπͺ Tallinn | 2 | |
## 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 Estonia
- [The largest companies in Estonia](https://www.tamtam.ai/l/largest-companies-estonia) (333)
- [Multinational companies in Estonia](https://www.tamtam.ai/l/multinational-companies-estonia) (94)
- [SaaS companies in Estonia](https://www.tamtam.ai/l/saas-companies-estonia) (50)
- [IT Services and IT Consulting companies in Estonia](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-estonia) (48)
- [Financial Services companies in Estonia](https://www.tamtam.ai/l/financial-services-companies-estonia) (35)
- [Software Development companies in Estonia](https://www.tamtam.ai/l/software-development-companies-estonia) (34)
- [Financial services firms in Estonia](https://www.tamtam.ai/l/financial-services-firms-estonia) (28)
- [IT services companies in Estonia](https://www.tamtam.ai/l/it-services-companies-estonia) (25)
## The same list elsewhere in Estonia
- [Critical infrastructure operators in Tallinn](https://www.tamtam.ai/l/critical-infrastructure-operators-tallinn) (25)
## 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-estonia