# Critical infrastructure operators headquartered in Algeria

Tamtam tracks 46 critical infrastructure operators headquartered in Algeria. This list ranks all of them by number of employees on LinkedIn, led by Sonatrach, sonelgaz and Algérie Telecom. Their median headcount is 1,100. Half of them were founded in 1991 or later.

This selection of large companies in Algeria includes major operators in critical infrastructure. Sonatrach and Naftal Spa are prominent in the oil and gas sector, while Algérie Telecom, Ooredoo Algerie, and ATM Mobilis are key players in telecommunications. Sonelgaz provides electricity and gas, and Air Algérie is the national airline. These companies are primarily large, established organizations, many of them founded in the mid to late 20th century.

A notable pattern among these companies is their significant role in essential services. For example, SEAAL provides clean water, BNA Algérie and Société Générale Algérie are major banks, and CHU Mustapha is a leading hospital. The concentration of headquarters in Algiers and its surrounding areas, such as Hydra, Mohammadia, and Chéraga, indicates a central hub for these critical operations.

🇩🇿 Algeria · 46 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Sonatrach](https://www.tamtam.ai/c/sonatrach) (sonatrach.com)<br>This Algerian government-owned company exploits hydrocarbon resources, covering all aspects of the oil and gas industry chain: upstream, midstream, and downstream operations. | Oil and Gas | 🇩🇿 Hydra | 47,510 | 1963 |
| 2 | [sonelgaz](https://www.tamtam.ai/c/sonelgaz) (sonelgaz.dz)<br>An Algerian operator providing electricity and gas energy supply services, with a historical presence in the sector | Government Administration | 🇩🇿 Alger | 11,567 | 1969 |
| 3 | [Algérie Telecom](https://www.tamtam.ai/c/algerie-telecom) (algerietelecom.dz)<br>Leading telecommunications company in Algeria, constantly adapting to technological advancements and market changes to maintain a strong position through diverse, innovative services and solutions | Telecommunications | 🇩🇿 Mohammadia | 11,031 | 2003 |
| 4 | [Naftal spa](https://www.tamtam.ai/c/naftal-spa) (naftal.dz)<br>Distributes petroleum products, including various fuels, bottled gas, bitumens, tires, aviation fuels, marine fuels, lubricants, and special products across Algeria. | Oil and Gas | 🇩🇿 Chéraga | 6,409 | 1981 |
| 5 | [Ooredoo Algerie](https://www.tamtam.ai/c/ooredoo-algerie) (ooredoo.dz)<br>Provides mobile telephone services, broadband solutions, digital futures, and fiber technologies to consumer and business markets in MENA. | Telecommunications | 🇩🇿 Chéraga | 5,229 | 2004 |
| 6 | [Algérie Poste](https://www.tamtam.ai/c/algerie-poste) (poste.dz)<br>Provides legal services and support based in Algiers, Algeria, focusing on legal matters and client assistance in the region. | Consumer Services | 🇩🇿 Algiers | 4,833 | 2003 |
| 7 | [ATM Mobilis](https://www.tamtam.ai/c/atm-mobilis) (mobilis.dz)<br>Mobile telecommunications company operating extensive network infrastructure, offering innovative mobile services and prepaid solutions to millions of subscribers. | Telecommunications | 🇩🇿 Bab Ezzouar | 4,617 | 2003 |
| 8 | [Djezzy](https://www.tamtam.ai/c/djezzy) (djezzy.dz)<br>A leading mobile telecommunication operator in Algeria with over 4000 employees and 17 million subscribers, favored by Algerians in all aspects | Telecommunications | 🇩🇿 Alger | 4,018 | 2001 |
| 9 | [Air Algérie](https://www.tamtam.ai/c/air-algerie-bab-ezzouar) (airalgerie.dz)<br>Established in 1947, this national airline of Algeria operates flights across 5 continents, aiming to transport a large number of Algerians with care and dedication | Airlines and Aviation | 🇩🇿 Bab Ezzouar | 2,828 | 1947 |
| 10 | [Algerian National Drilling Company ENAFOR](https://www.tamtam.ai/c/algerian-national-drilling-company-enafor) (enafor.dz)<br>Specializes in oilfield drilling operations, providing comprehensive drilling services and solutions for the oil and gas industry. | Oil and Gas | 🇩🇿 Ouargla | 2,497 |  |
| 11 | [SEAAL](https://www.tamtam.ai/c/seaal) (seaal.dz)<br>A public corporation in Algeria provides clean water to residents in two provinces, serves over 760,000 clients, and employs over 6,000 people | Environmental Services | 🇩🇿 Alger | 1,738 | 2006 |
| 12 | [BNA Algérie](https://www.tamtam.ai/c/bna-algerie) (bna.dz)<br>A leading national bank offering a wide range of banking and insurance products and services to over 26 million individual and business customers | Banking | 🇩🇿 Alger | 1,718 | 1966 |
| 13 | [CHU Mustapha](https://www.tamtam.ai/c/chu-mustapha) (chu-mustapha.dz)<br>A leading hospital in Algeria offering a wide range of medical services including neonatology, ophthalmology, neurology, and forensic medicine | Hospitals and Health Care | 🇩🇿 Sidi M'Hamed | 1,532 | 1854 |
| 14 | [Société Générale Algérie](https://www.tamtam.ai/c/societe-generale-algerie) (societegenerale.dz)<br>Provides diverse and innovative banking services to individuals, professionals, and businesses through extensive branch network and dedicated business centers. | Banking | 🇩🇿 Alger | 1,478 | 2000 |
| 15 | [SETRAM](https://www.tamtam.ai/c/setram) (setram.dz)<br>SETRAM aims to reinvent mobility through customer satisfaction, quality service, digital transformation, sustainable operations, and a focus on safety and environmental preservation | Rail Transportation | 🇩🇿 Kouba | 1,452 | 2012 |
| 16 | [AIR ALGÉRIE](https://www.tamtam.ai/c/air-algerie) (airalgerie.dz)<br>A national airline founded in 1947 with a fleet of 56 aircraft, constantly evolving to meet international standards and competitive challenges | Airlines and Aviation | 🇩🇿 Algiers | 1,372 | 1947 |
| 17 | [Société Nationale d'Assurance SAA](https://www.tamtam.ai/c/societe-nationale-d-assurance-saa) (saa.dz)<br>Leading insurance provider in Algeria, specializing in automobile insurance but expanding into other areas such as agriculture and transportation | Insurance | 🇩🇿 Algiers | 1,249 | 1963 |
| 18 | [Banque Extérieure d'Algérie](https://www.tamtam.ai/c/banque-exterieure-d-algerie) (bea.dz)<br>Specializes in exclusive financing for large Algerian energy and industrial enterprises, with a focus on foreign trade operations Offers diverse financial services to clients | Banking | 🇩🇿 Algerie | 1,248 | 1967 |
| 19 | [Air algerie](https://www.tamtam.ai/c/air-algerie-algiers) (airalgerie.dz)<br>An airline specializing in passenger and freight transportation | Airlines and Aviation | 🇩🇿 Algiers | 1,207 |  |
| 20 | [CNEP-Banque](https://www.tamtam.ai/c/cnep-banque) (cnepbanque.dz)<br>Specialized in savings collection, home loans, and financing for construction projects, energy, water, petrochemicals, and aluminum production With a wide national presence | Banking | 🇩🇿 Alger | 1,145 |  |
| 21 | [CPA Bank](https://www.tamtam.ai/c/cpa-bank) (cpa-bank.dz)<br>A financial institution offering a wide range of banking services, focusing on sectors like construction, healthcare, commerce, hospitality, media, SMEs, and promoting Islamic finance | Banking | 🇩🇿 Alger | 1,125 | 1966 |
| 22 | [BDL - Banque de Développement Local](https://www.tamtam.ai/c/bdl-banque-de-developpement-local) (bdl.dz)<br>This organization is a major player in financing various sectors, including small and medium-sized businesses, trade, professionals, individuals, households, and housing development | Banking | 🇩🇿 Staoueli | 1,110 | 1985 |
| 23 | [Hyproc Shipping Company S.p.A.](https://www.tamtam.ai/c/hyproc-shipping-company-s-p-a) (hyproc.dz)<br>Specializing in LNG and LPG transportation with over 41 years of experience, our fleet offers a wide range of maritime services globally | Maritime Transportation | 🇩🇿 Oran | 1,100 | 1982 |
| 24 | [COMPAGNIE ALGERIENNE DES ASSURANCES - CAAT](https://www.tamtam.ai/c/compagnie-algerienne-des-assurances-caat) (caat.dz)<br>A public insurance enterprise fully owned by the Algerian government, specializing in covering risks for both private and public major clients | Insurance | 🇩🇿 Algiers | 953 | 1985 |
| 25 | [Bank of Algeria بنك الجزائر](https://www.tamtam.ai/c/bank-of-algeria) (bank-of-algeria.dz)<br>Established in 1962, this institution oversees monetary policy, loans, and banking operations to promote economic development while maintaining exchange rate stability | Banking | 🇩🇿 Alger | 946 | 1962 |
| 26 | [بنك الفلاحة و التنمية الريفية -BADR Banque](https://www.tamtam.ai/c/badr-banque) (badrbank.dz)<br>A national financial institution founded in 1982, specializing in banking services for the agricultural, agro-food, fishing, and aquaculture sectors | Banking | 🇩🇿 Alger | 865 | 1982 |
| 27 | [BNP Paribas El Djazaïr](https://www.tamtam.ai/c/bnp-paribas-el-djazair) (bnpparibas.dz)<br>A universal bank in Algeria, part of a leading European banking group, providing high-quality services to retail and corporate clients | Banking | 🇩🇿 Algérie | 815 | 2002 |
| 28 | [Banque de Développement Local](https://www.tamtam.ai/c/banque-de-developpement-local) (bdl.dz)<br>Building a sustainable future through conventional, Islamic, and digital financial solutions Let's create a better tomorrow together | Banking | 🇩🇿 Staoueli | 800 | 1985 |
| 29 | [Banque de l'Agriculture et du Développement Rural](https://www.tamtam.ai/c/banque-de-l-agriculture-et-du-developpement-rural)<br>A banking institution in Algeria focused on agricultural and rural development, located in Algiers | Banking | 🇩🇿 Algiers | 666 |  |
| 30 | [La Caisse Nationale d’Epargne et de Prévoyance-Banque](https://www.tamtam.ai/c/la-caisse-nationale-d-epargne-et-de-prevoyance-banque) (cnepbanque.dz)<br>A public bank with a strong presence nationwide, offering a wide range of financial services to individuals, households, professionals, and businesses since 1964 | Banking | 🇩🇿 Alger | 590 | 1964 |
| 31 | [Établissement Hospitalo Universitaire d'Oran](https://www.tamtam.ai/c/etablissement-hospitalo-universitaire-d-oran) (ehuoran.dz)<br>The university hospital institution in Oran provides healthcare services, with a focus on education and research, under the Ministry of Health's administration | Hospitals and Health Care | 🇩🇿 Oran | 565 |  |
| 32 | [Trust Bank Algérie](https://www.tamtam.ai/c/trust-bank-algerie) (trustbank.dz)<br>Private Algerian bank offering innovative remote banking, credit, investment, and financing solutions tailored to client needs since 2002. | Banking | 🇩🇿 Alger | 492 | 2002 |
| 33 | [CASH Assurances](https://www.tamtam.ai/c/cash-assurances) (cash-assurances.dz)<br>A reliable and innovative insurer specializing in covering complex risks, with a focus on excellence and expanding offerings for businesses | Insurance | 🇩🇿 Algiers | 484 | 1999 |
| 34 | [SALAMA ASSURANCES ALGERIE](https://www.tamtam.ai/c/salama-assurances-algerie) (salama-assurances.dz)<br>Licensed Algerian joint-stock insurance company offering comprehensive insurance operations, part of the international SALAMA Islamic insurance group. | Insurance | 🇩🇿 Alger | 472 | 2000 |
| 35 | [CNAS Direction Générale](https://www.tamtam.ai/c/cnas-direction-generale) (cnas.dz)<br>The CNAS provides social insurance to salaried workers for health, maternity, disability, occupational accidents, and retirement in Algeria | Civic and Social Organizations | 🇩🇿 Alger | 449 |  |
| 36 | [GRTG/spa SONELGAZ.](https://www.tamtam.ai/c/grtg-spa-sonelgaz) (grtg.com)<br>It manages the national gas transport network, ensuring adequate capacity and operation under regulated economic principles, with a workforce of 1,291 employees | Oil and Gas | 🇩🇿 Alger | 396 | 2004 |
| 37 | [Groupe Telecom Algérie مجمع اتصالات الجزائر](https://www.tamtam.ai/c/groupe-telecom-algerie) (gta.dz)<br>A telecommunications conglomerate based in Algeria, providing various communication services and solutions to individuals and businesses in the country | Telecommunications | 🇩🇿 Bab Ezzouar | 387 | 2017 |
| 38 | [بنك السلام الجزائر](https://www.tamtam.ai/c/company-dely-brahim) (alsalamalgeria.com)<br>A multi-purpose bank in Algeria providing innovative and high-quality banking services in accordance with Islamic principles, aiming for sustainable value for all stakeholders | Banking | 🇩🇿 Dely Brahim | 375 | 2008 |
| 39 | [ANESRIF](https://www.tamtam.ai/c/anesrif) (anesrif.dz)<br>A public establishment overseeing railway projects, gathering resources to ensure timely and successful implementation of modernization plans | Truck Transportation | 🇩🇿 Rouiba | 368 | 2005 |
| 40 | [Banque Al Baraka d'Algérie](https://www.tamtam.ai/c/banque-al-baraka-d-algerie) (albaraka-bank.dz)<br>Provides Sharia-compliant banking products and financing solutions for families, professionals, and businesses, including investment and consumer financing. | Banking | 🇩🇿 Alger | 352 | 1991 |
| 41 | [Pharmacie Centrale des Hôpitaux](https://www.tamtam.ai/c/pharmacie-centrale-des-hopitaux) (pch.dz)<br>The company is an industrial and commercial establishment that supplies pharmaceutical products to both public and private hospitals | Hospitals and Health Care | 🇩🇿 Dar el Beida | 327 |  |
| 42 | [Télédiffusion d'Algérie - TDA](https://www.tamtam.ai/c/telediffusion-d-algerie-tda) (tda.dz)<br>A public industrial and commercial entity providing radio and television broadcasting services, internet access, audiovisual services, and ICT solutions | Telecommunications | 🇩🇿 Alger | 325 | 1962 |
| 43 | [GIG ALGERIA](https://www.tamtam.ai/c/gig-algeria) (gig.dz)<br>Provider of various insurance services in Algeria, with a focus on customer satisfaction and quality management certified to ISO 9001 standards Expanding internationally through strategic partnerships | Insurance | 🇩🇿 Alger | 319 | 1998 |
| 44 | [Entreprise Portuaire De Skikda EPS](https://www.tamtam.ai/c/entreprise-portuaire-de-skikda-eps)<br>Established in 1989, we specialize in port operations, including handling, docking, towing, piloting, managing tools, and security services ISO certified | Maritime Transportation | 🇩🇿 Skikda | 216 | 1989 |
| 45 | [CHU Béjaïa](https://www.tamtam.ai/c/chu-bejaia) (chubejaia.dz)<br>A hospital and university center located in Bejaia, Algeria, providing medical care, education, and research services to the local community | Medical Practices | 🇩🇿 Bejaia | 184 | 1991 |
| 46 | [Hôpital Chahids Mahmoudi](https://www.tamtam.ai/c/hopital-chahids-mahmoudi) (hcm-dz.com)<br>A private hospital offering medical and surgical care in various specialties, including a 24/7 emergency department, with advanced radiology and cancer diagnostic and treatment services | Hospitals and Health Care | 🇩🇿 Tizi Ouzou | 183 |  |

## 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 Algeria

- [The largest companies in Algeria](https://www.tamtam.ai/l/largest-companies-algeria) (320)
- [Public sector organisations in Algeria](https://www.tamtam.ai/l/public-sector-organisations-algeria) (84)
- [Manufacturers in Algeria](https://www.tamtam.ai/l/manufacturers-algeria) (55)
- [Education providers in Algeria](https://www.tamtam.ai/l/education-companies-algeria) (44)
- [Higher Education companies in Algeria](https://www.tamtam.ai/l/higher-education-companies-algeria) (40)
- [Retail chains in Algeria](https://www.tamtam.ai/l/retail-chains-algeria) (34)
- [Financial services firms in Algeria](https://www.tamtam.ai/l/financial-services-firms-algeria) (25)
- [Research institutes in Algeria](https://www.tamtam.ai/l/research-institutes-algeria) (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 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-algeria