# Critical infrastructure operators headquartered in Tunisia

Tamtam tracks 41 critical infrastructure operators headquartered in Tunisia. This list ranks all of them by number of employees on LinkedIn, led by Tunisie Telecom, Ooredoo Tunisie and BIAT. Their median headcount is 716. Half of them were founded in 1974 or later.

This selection of critical infrastructure operators in Tunisia features large established companies, mainly in telecommunications, banking, and energy. Notable examples include Tunisie Telecom, which provides fixed, mobile, and internet services; Ooredoo Tunisie, a mobile telecommunications operator; BIAT, a financial group with extensive banking and insurance services; and Société Tunisienne de l'Electricité et du Gaz (STEG), responsible for the country's electricity and gas networks. TUNISAIR, the national airline, is also present. The companies listed are predominantly headquartered in Tunis, indicating a strong centralization of critical infrastructure management within the capital city.

🇹🇳 Tunisia · 41 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Tunisie Telecom](https://www.tamtam.ai/c/tunisie-telecom) (tunisietelecom.tn)<br>Provides fixed, mobile, and internet communication services with modern infrastructure, supporting culture, education, and digital transformation in Tunisia. | Telecommunications | 🇹🇳 Tunis | 5,754 | 1995 |
| 2 | [Ooredoo Tunisie](https://www.tamtam.ai/c/ooredoo-tunisie) (ooredoo.tn)<br>A leading mobile telecommunications operator in Tunisia, focusing on innovative services, quality customer service, and expanding network coverage for its subscribers | Telecommunications | 🇹🇳 Tunis | 3,714 | 2002 |
| 3 | [BIAT](https://www.tamtam.ai/c/biat) (biat.com.tn)<br>A leading financial group in Tunisia with a network of 205 branches, offering a wide range of services including banking, insurance, asset management, and international consulting | Banking | 🇹🇳 Tunis | 3,662 | 1976 |
| 4 | [Société Tunisienne de l'Electricité et du Gaz (STEG)](https://www.tamtam.ai/c/societe-tunisienne-de-l-electricite-et-du-gaz-steg) (steg.com.tn)<br>Public entity responsible for electrifying the country, developing natural gas network, and maintaining electricity and gas infrastructure with a focus on performance and service quality | Oil and Gas | 🇹🇳 Tunis | 2,934 |  |
| 5 | [TUNISAIR](https://www.tamtam.ai/c/tunisair) (tunisair.com)<br>National Tunisian airline founded in 1948 Operates domestic and international flights, providing transportation services with a focus on quality and safety standards | Airlines and Aviation | 🇹🇳 Tunis | 2,805 | 1948 |
| 6 | [STEG Tunisie](https://www.tamtam.ai/c/steg-tunisie) (steg.com.tn)<br>Management of electricity and natural gas production, transmission, distribution, electrification, and infrastructure development across the country. | Oil and Gas | 🇹🇳 Tunis | 2,111 | 1962 |
| 7 | [STB Bank الشركة التونسية للبنك](https://www.tamtam.ai/c/stb-bank) (stb.com.tn)<br>National bank focused on economic development, digital transformation, customer innovation, financial inclusion, and recognized for governance and social responsibility. | Banking | 🇹🇳 Tunis | 1,581 | 1957 |
| 8 | [BNA - Banque Nationale Agricole](https://www.tamtam.ai/c/bna-banque-nationale-agricole) (bna.tn)<br>Provider of universal banking services, focusing on identity and personalized financial solutions to meet clients' needs | Banking | 🇹🇳 Tunis | 1,409 | 1959 |
| 9 | [UIB - Groupe Société Générale](https://www.tamtam.ai/c/uib-groupe-societe-generale) (uib.com.tn)<br>Established in 1964, this financial institution in Tunisia offers a wide range of banking services to individuals, businesses, and institutions through its network of over 130 branches | Banking | 🇹🇳 Rue du Lac Turkana | 1,393 | 1964 |
| 10 | [Amen Bank](https://www.tamtam.ai/c/amen-bank) (amenbank.com.tn)<br>More than a century-old bank with deep-rooted professionalism and history, standing as a distinguished leader in the national banking sector. | Banking | 🇹🇳 Tunis | 1,277 | 1880 |
| 11 | [Attijari bank Tunisie](https://www.tamtam.ai/c/attijari-bank-tunisie) (attijaribank.com.tn)<br>Universal Tunisian bank operating a wide network of branches, business centers, and specialized subsidiaries offering financial services to individuals, professionals, and businesses | Banking | 🇹🇳 Tunis | 1,258 |  |
| 12 | [BANQUE DE TUNISIE](https://www.tamtam.ai/c/banque-de-tunisie) (bt.com.tn)<br>Finances businesses, individuals; major actor in development projects across all sectors, respecting all credit risk management standards. | Banking | 🇹🇳 Tunis | 1,251 | 1884 |
| 13 | [Orange Tunisie](https://www.tamtam.ai/c/orange-tunisie) (orange.tn)<br>Second largest private telecom operator in Tunisia offering fixed lines, mobile services, high-speed internet, mobile equipment, and value-added services. | Telecommunications | 🇹🇳 Tunis | 1,187 | 2010 |
| 14 | [UBCI](https://www.tamtam.ai/c/ubci) (ubci.tn)<br>Established in 1961, the company offers a wide range of banking products and services for individuals, professionals, and businesses in Tunisia | Banking | 🇹🇳 Tunis | 1,030 |  |
| 15 | [Enda Tamweel](https://www.tamtam.ai/c/enda-tamweel) (endatamweel.tn)<br>Microfinance institution promoting economic and social inclusion of vulnerable populations through credit, training, and support for micro-entrepreneurs in Tunisia. | Financial Services | 🇹🇳 Cité el Khadra | 1,010 | 1990 |
| 16 | [Nouvelair Tunisia](https://www.tamtam.ai/c/nouvelair-tunisia) (nouvelair.com)<br>Specializing in low-priced flights to Tunisia from over 130 airports in 30 countries, including popular European cities like Paris, Munich, and Moscow | Airlines and Aviation | 🇹🇳 Monastir | 931 | 1989 |
| 17 | [TRANSTU](https://www.tamtam.ai/c/transtu) (transtu.tn)<br>Established for 45 years, this organization specializes in providing products or services in a particular industry or sector | Truck Transportation | 🇹🇳 Tunis | 918 | 2003 |
| 18 | [BH Bank](https://www.tamtam.ai/c/bh-bank) (bhbank.tn)<br>Universal bank with 151 branches, offering diverse financial products and services, focusing on customer-centric solutions and multiple distribution channels. | Banking | 🇹🇳 Tunis | 900 |  |
| 19 | [SONEDE](https://www.tamtam.ai/c/sonede) (sonede.com.tn)<br>A public establishment responsible for producing and distributing potable water throughout Tunisia, including studying, treating, managing technical networks, and commercial subscriber services | Renewables & Environment | 🇹🇳 Tunis | 845 | 1968 |
| 20 | [CTN - Compagnie Tunisienne de Navigation](https://www.tamtam.ai/c/ctn-compagnie-tunisienne-de-navigation) (ctn.com.tn)<br>Provides regular ferry and cargo shipping services between Tunisia and major Mediterranean ports, focusing on passenger and vehicle transport. | Maritime Transportation | 🇹🇳 Tunis | 735 | 1959 |
| 21 | [Société Nationale des Chemins de Fer Tunisiens \| SNCFT](https://www.tamtam.ai/c/societe-nationale-des-chemins-de-fer-tunisiens-sncft) (sncft.com.tn)<br>National public entity operating in various industries or sectors, providing services or products to the public or government | Railroad Equipment Manufacturing | 🇹🇳 Tunis | 716 | 1957 |
| 22 | [Assurances COMAR et HAYETT](https://www.tamtam.ai/c/assurances-comar-et-hayett) (comar.tn)<br>A leading insurance and reinsurance provider with strong financial backing and a focus on professionalism, innovation, and customer satisfaction in Tunisia | Insurance | 🇹🇳 Tunis | 634 | 1969 |
| 23 | [Assurances Maghrebia](https://www.tamtam.ai/c/assurances-maghrebia) (maghrebia.com.tn)<br>Private insurance and reinsurance company providing financial protection and insurance solutions for individuals, professionals, and businesses since 1973. | Insurance | 🇹🇳 Tunis | 612 | 1973 |
| 24 | [The Tunisian Civil Aviation And Airports Authority (OACA)](https://www.tamtam.ai/c/the-tunisian-civil-aviation-and-airports-authority-oaca) (oaca.nat.tn)<br>Provider of aerodrome and approach control, air traffic services, aeronautical information, and airport management for 7 airports in Tunisia | Airlines and Aviation | 🇹🇳 Tunis | 586 | 1970 |
| 25 | [Banque Centrale de Tunisie - البنك المركزي التونسي](https://www.tamtam.ai/c/banque-centrale-de-tunisie) (bct.gov.tn)<br>The institution is the central bank of Tunisia, focusing on maintaining price stability, managing reserves, supervising financial institutions, and advising the government on economic issues | Banking | 🇹🇳 Tunis | 562 | 1958 |
| 26 | [STAR ASSURANCES](https://www.tamtam.ai/c/star-assurances) (star.com.tn)<br>Leading insurance provider in Tunisia for individuals and businesses, with a focus on customer satisfaction, ethical practices, and excellent service tailored to clients' needs | Insurance | 🇹🇳 La Goulette | 537 | 1958 |
| 27 | [TUNISAIR](https://www.tamtam.ai/c/tunisair-tunis) (tunisair.com)<br>A leading airline established in 1948, specializing in traffic to and from Tunisia with a fleet of 29 aircraft serving 44 global destinations daily | Airlines and Aviation | 🇹🇳 Tunis | 486 |  |
| 28 | [OACA](https://www.tamtam.ai/c/oaca) (oaca.nat.tn)<br>Manages civil aviation operations and airports in Tunisia | Aviation and Aerospace Component Manufacturing | 🇹🇳 Tunis | 468 |  |
| 29 | [WIFAK INTERNATIONAL BANK](https://www.tamtam.ai/c/wifak-international-bank) (wifakbank.com)<br>Specializing in Islamic banking, the organization transformed from a leasing company to provide financial services to underserved regions, aiming for growth in Tunisia and Africa | Banking | 🇹🇳 Medenine | 449 | 2015 |
| 30 | [Nouvelair Tunisie](https://www.tamtam.ai/c/nouvelair-tunisie) (nouvelair.com)<br>Tunisian private airline operating Airbus A320 with over 130 European routes to Tunisia, focusing on safety and European standards | Airlines/Aviation | 🇹🇳 Monastir | 414 | 1989 |
| 31 | [LLOYD ASSURANCES](https://www.tamtam.ai/c/lloyd-assurances) (lloyd.com.tn)<br>Multibranch insurance company offering products for individuals, professionals, and businesses with capital growth, product innovation, and digital transformation. | Insurance | 🇹🇳 Tunis | 365 | 1945 |
| 32 | [STEG International Services](https://www.tamtam.ai/c/steg-international-services) (steg-is.com)<br>Planning, design, supply, implementation, operation, and maintenance of electrical and gas production, transport, distribution, energy management, efficiency, training, and skills development. | Electric Power Transmission, Control, and Distribution | 🇹🇳 Tunis | 325 | 2006 |
| 33 | [L'Office National de l'Assainissement (ONAS)](https://www.tamtam.ai/c/l-office-national-de-l-assainissement-onas) (onas.nat.tn)<br>The organization was established in 1974 to manage sanitation, later expanded to include water protection and pollution control under environmental ministry supervision | Renewable Energy Semiconductor Manufacturing | 🇹🇳 Tunis | 322 | 1974 |
| 34 | [Microcred](https://www.tamtam.ai/c/microcred-tunis) (baobab.com)<br>An international microfinance institution providing credits to individuals with ongoing projects or young people aiming to start their own ventures | Financial Services | 🇹🇳 Tunis | 283 | 2014 |
| 35 | [GlobalNet Tunisie](https://www.tamtam.ai/c/globalnet-tunisie) (gnet.tn)<br>A provider of internet services for individuals and businesses, offering diverse subscriptions, cloud solutions, managed services, and rich, impartial content | Technology, Information and Internet | 🇹🇳 Tunis | 267 | 1997 |
| 36 | [TOPNET](https://www.tamtam.ai/c/topnet-tunis) (topnet.tn)<br>A leading provider of telecommunications services in Tunisia, offering internet solutions for residential and business customers, with a focus on connectivity, security, and cloud services | Technology, Information and Internet | 🇹🇳 Tunis | 266 | 2001 |
| 37 | [Société Tunisienne des Industries de Raffinage - STIR](https://www.tamtam.ai/c/societe-tunisienne-des-industries-de-raffinage-stir) (stir.com.tn)<br>A Tunisian company specializing in refining crude oil for the national market, covering the country's petroleum product needs through production and importation | Oil and Gas | 🇹🇳 Bizerte | 241 | 1961 |
| 38 | [Banque de Tunisie et des Émirats](https://www.tamtam.ai/c/banque-de-tunisie-et-des-emirats) (bte.com.tn)<br>Offers banking services including account management, mobile banking, currency exchange rates, credit and investment simulators, and corporate banking platform. | Banking | 🇹🇳 Tunis | 225 | 1982 |
| 39 | [IZI-Zitouna Payment](https://www.tamtam.ai/c/izi-zitouna-payment) (zitounapayment.com)<br>A new secure online payment solution offering various services such as account opening, cash deposits/withdrawals, fund transfers, and bill payments through a mobile application | Financial Services | 🇹🇳 Tunis | 186 | 2022 |
| 40 | [Pharmacie Centrale de Tunisie](https://www.tamtam.ai/c/pharmacie-centrale-de-tunisie) (pct.com.tn)<br>Pharmacie Centrale de Tunisie is a biotechnology company based in Tunis, Tunisia, specializing in pharmaceutical products and health solutions | Pharmaceutical Manufacturing | 🇹🇳 Tunis | 183 |  |
| 41 | [Capital African Partners Bank](https://www.tamtam.ai/c/capital-african-partners-bank) (cap-bank.com)<br>An established investment bank in Tunisia, offering services such as mergers & acquisitions, corporate finance, advisory, bridge loans, private equity, and asset management | Investment Banking | 🇹🇳 Mutuelleville | 16 | 1997 |

## 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 Tunisia

- [The largest companies in Tunisia](https://www.tamtam.ai/l/largest-companies-tunisia) (335)
- [Manufacturers in Tunisia](https://www.tamtam.ai/l/manufacturers-tunisia) (54)
- [Multinational companies in Tunisia](https://www.tamtam.ai/l/multinational-companies-tunisia) (49)
- [Public sector organisations in Tunisia](https://www.tamtam.ai/l/public-sector-organisations-tunisia) (40)
- [Retail chains in Tunisia](https://www.tamtam.ai/l/retail-chains-tunisia) (39)
- [Higher Education companies in Tunisia](https://www.tamtam.ai/l/higher-education-companies-tunisia) (35)
- [Education providers in Tunisia](https://www.tamtam.ai/l/education-companies-tunisia) (30)
- [Food and Beverage Manufacturing companies in Tunisia](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-tunisia) (29)
- [IT services companies in Tunisia](https://www.tamtam.ai/l/it-services-companies-tunisia) (28)
- [Financial services firms in Tunisia](https://www.tamtam.ai/l/financial-services-firms-tunisia) (26)

## 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 Africa](https://www.tamtam.ai/l/critical-infrastructure-operators-in-africa) (868)

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Source: https://www.tamtam.ai/l/critical-infrastructure-operators-tunisia