# Multinational companies headquartered in Oslo

Tamtam tracks 240 multinational companies headquartered in Oslo. This list ranks the 30 largest by number of employees on LinkedIn, led by Yara International, Norsk Hydro and DNB. Their median headcount is 3,027. Half of them were founded in 1957 or later.

These multinational companies in Oslo are primarily large and well-established organizations, with several founded in the late 19th or early 20th centuries. The companies span diverse sectors, including industry, finance, retail, and public services. For example, Yara International focuses on sustainable crop nutrition, Norsk Hydro on aluminium production and renewables, and DNB is a major financial services group. Other notable entities include the University of Oslo, Reitan Retail, and the Forsvaret - Norwegian Armed Forces.

A significant pattern observed is the strong presence of companies involved in resource management and public services. Statkraft is a global leader in renewable energy generation, while Posten Bring AS provides comprehensive logistics. The list also includes humanitarian and educational institutions such as the Norwegian Refugee Council and the University of Oslo, demonstrating a mix of commercial and public-oriented organizations.

🇳🇴 Oslo · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Yara International](https://www.tamtam.ai/c/yara-international) (yara.com)<br>A global company focused on sustainable crop nutrition, low-emission energy solutions, and creating a more efficient and nature-positive food value chain | Farming | 🇳🇴 Oslo | 15,349 |  |
| 2 | [Norsk Hydro](https://www.tamtam.ai/c/norsk-hydro) (hydro.com)<br>Development of sustainable industries including aluminium production, energy, metal recycling, renewables, and batteries with global operations and innovation focus. | Mining | 🇳🇴 Oslo | 13,192 | 1905 |
| 3 | [DNB](https://www.tamtam.ai/c/dnb) (dnb.no)<br>A leading financial services group in Norway and the Nordic region offering a range of services including banking, insurance, and advisory services globally | Financial Services | 🇳🇴 Oslo | 11,328 |  |
| 4 | [University of Oslo](https://www.tamtam.ai/c/university-of-oslo-700369) (uio.no)<br>Leading Norwegian university with eight faculties offering education and research in diverse fields including law, medicine, humanities, and sciences. | Education Administration Programs | 🇳🇴 Oslo | 8,168 |  |
| 5 | [Reitan Retail](https://www.tamtam.ai/c/reitan-retail) (reitanretail.no)<br>A leading retail company in the Nordic and Baltic region operating discount grocery, convenience stores, and sustainable mobility solutions with over 3,800 outlets | Retail | 🇳🇴 Oslo | 7,293 |  |
| 6 | [Forsvaret - Norwegian Armed Forces](https://www.tamtam.ai/c/forsvaret-norwegian-armed-forces) (forsvaret.no)<br>The company offers diverse opportunities and exciting challenges in various roles, emphasizing the importance of contributing to safeguarding Norway's interests and community | Armed Forces | 🇳🇴 Oslo | 6,554 |  |
| 7 | [Visma](https://www.tamtam.ai/c/visma) (visma.com)<br>It provides mission-critical business software to enhance efficiency and resilience for companies and organizations across Europe and Latin America. | Software Development | 🇳🇴 Oslo | 6,092 | 1996 |
| 8 | [Norwegian Refugee Council](https://www.tamtam.ai/c/norwegian-refugee-council) (nrc.no)<br>A humanitarian organization aiding displaced individuals worldwide by providing protection, support, and advocacy in various crisis situations and emergencies | Non-profit Organizations | 🇳🇴 Oslo | 5,966 | 1946 |
| 9 | [Gjensidige](https://www.tamtam.ai/c/gjensidige) (gjensidige.no)<br>A top player in the Nordic general insurance market, offering insurance products in multiple countries, along with pension, savings, and healthcare services | Insurance | 🇳🇴 Oslo | 4,916 | 1816 |
| 10 | [Posten Bring AS](https://www.tamtam.ai/c/posten-bring-as) (postenbring.no)<br>A Nordic company providing complete solutions in communications and logistics, aiming to simplify everyday life and connect the world | Transportation, Logistics, Supply Chain and Storage | 🇳🇴 Oslo | 4,620 | 1647 |
| 11 | [Statkraft](https://www.tamtam.ai/c/statkraft) (statkraft.com)<br>A global leader in renewable energy generation, specializing in hydropower, wind power, solar power, and gas-fired power, with operations in 21 countries | Electric Power Generation | 🇳🇴 Oslo | 4,563 | 1895 |
| 12 | [Strawberry](https://www.tamtam.ai/c/strawberry-oslo) (linktr.ee)<br>Strawberry is a leading hotel company in the Nordics, offering a diverse range of hotels, meetings, restaurants, and spas Energized by values of energy, courage, and enthusiasm | Hospitality | 🇳🇴 Oslo | 3,504 |  |
| 13 | [Veidekke Norge](https://www.tamtam.ai/c/veidekke-norge) (veidekke.no)<br>A leading Scandinavian contractor and property developer offering a wide range of construction services, road maintenance, and production of asphalt, gravel, and concrete | Construction | 🇳🇴 Oslo | 3,458 | 1936 |
| 14 | [GK](https://www.tamtam.ai/c/gk) (gk.no)<br>A leading provider of building technology solutions in Scandinavia, offering sustainable solutions in ventilation, refrigeration, automation, electrical, plumbing, and security systems Building sustainable communities for generations | Construction | 🇳🇴 Oslo | 3,454 |  |
| 15 | [Crayon](https://www.tamtam.ai/c/crayon) (crayon.com)<br>Global technology solutions provider supporting secure cloud-first digital transformation with a people-first, vendor-agnostic approach and strong ESG commitments. | IT Services and IT Consulting | 🇳🇴 Oslo | 3,027 | 2002 |
| 16 | [Multiconsult](https://www.tamtam.ai/c/multiconsult) (multiconsult.no)<br>Multiconsult offers a wide range of consulting, engineering, and design services in various sectors, with a focus on meeting customer expectations and achieving satisfaction | Construction | 🇳🇴 Oslo | 3,018 | 1908 |
| 17 | [Atea Norge AS](https://www.tamtam.ai/c/atea-norge-as) (atea.no)<br>Primary IT infrastructure supplier in the Nordic and Baltic regions, offering products, services, and specialist expertise to customers while listed on the Oslo Stock Exchange | IT Services and IT Consulting | 🇳🇴 Oslo | 2,516 | 1968 |
| 18 | [Opera](https://www.tamtam.ai/c/opera) (opera.com)<br>Provides a range of internet products including browsers, gaming portals, news recommendations, advertising platforms, AI, and Web3 services globally. | Software Development | 🇳🇴 Oslo | 2,422 | 1995 |
| 19 | [TINE](https://www.tamtam.ai/c/tine) (tine.no)<br>Cooperative owned by milk farmers producing dairy products, focusing on sustainability, food security, and supporting rural communities in Norway. | Food and Beverage Manufacturing | 🇳🇴 Oslo | 2,414 |  |
| 20 | [Elkem ASA](https://www.tamtam.ai/c/elkem-asa) (elkem.com)<br>A global provider of advanced material solutions focused on developing silicones, silicon products, and carbon solutions for a sustainable future | Primary Metal Manufacturing | 🇳🇴 Oslo | 2,350 | 1904 |
| 21 | [Bouvet ASA](https://www.tamtam.ai/c/bouvet-asa) (bouvet.no)<br>Leading Scandinavian consulting company providing technology, communication, and management services. Offers development and advisory services to public and private sector clients. | IT Services and IT Consulting | 🇳🇴 Oslo | 2,325 | 2002 |
| 22 | [Sapa](https://www.tamtam.ai/c/sapa) (hydro.com)<br>The company is part of Hydro and specializes in working with aluminum in design and production Follow for news and job opportunities | Mining | 🇳🇴 Oslo | 2,285 | 1963 |
| 23 | [BW Offshore](https://www.tamtam.ai/c/bw-offshore) (bwoffshore.com)<br>Engineering and operating floating production storage and offloading vessels, providing tailored offshore energy solutions for global markets. | Oil and Gas | 🇳🇴 Oslo | 1,943 |  |
| 24 | [Orkla Food Ingredients AS](https://www.tamtam.ai/c/orkla-food-ingredients-as) (orklafoodingredients.com)<br>A leading European bakery ingredients manufacturer and distributor with a wide range of products tailored for various customer channels worldwide | Food and Beverage Manufacturing | 🇳🇴 Oslo | 1,889 |  |
| 25 | [Zalaris](https://www.tamtam.ai/c/zalaris) (zalaris.com)<br>Providing HR and payroll administration solutions, empowering clients with valuable information to invest in their people, fostering team spirit and achieving high results | Human Resources Services | 🇳🇴 Oslo | 1,822 | 2000 |
| 26 | [PwC Norway](https://www.tamtam.ai/c/pwc-norway) (pwc.no)<br>A leading global professional services firm with deep expertise in auditing, advisory, and legal services, operating in 155 countries worldwide | Business Consulting and Services | 🇳🇴 Oslo | 1,802 |  |
| 27 | [DeepOcean](https://www.tamtam.ai/c/deepocean) (deepoceangroup.com)<br>Integrated provider of safe, high-quality subsea services and technologies for the offshore industry, focusing on survey, installation, maintenance, and project management globally | Oil and Gas | 🇳🇴 Oslo | 1,800 |  |
| 28 | [Elopak](https://www.tamtam.ai/c/elopak) (elopak.com)<br>A leading global supplier of eco-friendly carton packaging and filling equipment, offering sustainable solutions to reduce plastic waste | Packaging and Containers Manufacturing | 🇳🇴 Oslo | 1,683 | 1957 |
| 29 | [PGS](https://www.tamtam.ai/c/pgs) (tgs.com)<br>Global marine geophysics company using advanced seismic survey technology and cloud computing for energy exploration, transition, renewable energy support, and seabed mineral understanding | Oil and Gas | 🇳🇴 Oslo | 1,678 | 1991 |
| 30 | [Vy](https://www.tamtam.ai/c/vy) (vy.no)<br>A Nordic transport group offering rail and bus services, freight transport, and customer experience innovation, focused on delivering the best journey | Ground Passenger Transportation | 🇳🇴 Oslo | 1,635 | 1883 |

## 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 11, 2026.

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- [Consulting firms in Oslo](https://www.tamtam.ai/l/consulting-firms-oslo) (37)
- [Government Administration companies in Oslo](https://www.tamtam.ai/l/government-administration-companies-oslo) (37)
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- [AI companies in Oslo](https://www.tamtam.ai/l/ai-companies-oslo) (30)
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## The same list elsewhere in Norway

- [Multinational companies in Norway](https://www.tamtam.ai/l/multinational-companies-norway) (556)
- [Multinational companies in Akershus](https://www.tamtam.ai/l/multinational-companies-akershus) (64)
- [Multinational companies in Vestland](https://www.tamtam.ai/l/multinational-companies-vestland) (43)
- [Multinational companies in Rogaland](https://www.tamtam.ai/l/multinational-companies-rogaland) (38)
- [Multinational companies in Bergen](https://www.tamtam.ai/l/multinational-companies-bergen) (32)

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Source: https://www.tamtam.ai/l/multinational-companies-oslo