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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Yara Internationalyara.com
A global company focused on sustainable crop nutrition, low-emission energy solutions, and creating a more efficient and nature-positive food value chain |
15,349 | |||
| 2 |
Norsk Hydrohydro.com
Development of sustainable industries including aluminium production, energy, metal recycling, renewables, and batteries with global operations and innovation focus. |
13,192 | |||
| 3 | 11,328 | ||||
| 4 |
University of Oslouio.no
Leading Norwegian university with eight faculties offering education and research in diverse fields including law, medicine, humanities, and sciences. |
8,168 | |||
| 5 |
Reitan Retailreitanretail.no
A leading retail company in the Nordic and Baltic region operating discount grocery, convenience stores, and sustainable mobility solutions with over 3,800 outlets |
7,293 | |||
| 6 |
Forsvaret - Norwegian Armed Forcesforsvaret.no
The company offers diverse opportunities and exciting challenges in various roles, emphasizing the importance of contributing to safeguarding Norway's interests and community |
6,554 | |||
| 7 | 6,092 | ||||
| 8 |
Norwegian Refugee Councilnrc.no
A humanitarian organization aiding displaced individuals worldwide by providing protection, support, and advocacy in various crisis situations and emergencies |
5,966 | |||
| 9 |
Gjensidigegjensidige.no
A top player in the Nordic general insurance market, offering insurance products in multiple countries, along with pension, savings, and healthcare services |
4,916 | |||
| 10 |
Posten Bring ASpostenbring.no
A Nordic company providing complete solutions in communications and logistics, aiming to simplify everyday life and connect the world |
4,620 | |||
| 11 |
Statkraftstatkraft.com
A global leader in renewable energy generation, specializing in hydropower, wind power, solar power, and gas-fired power, with operations in 21 countries |
4,563 | |||
| 12 |
Strawberrylinktr.ee
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 |
3,504 | |||
| 13 |
Veidekke Norgeveidekke.no
A leading Scandinavian contractor and property developer offering a wide range of construction services, road maintenance, and production of asphalt, gravel, and concrete |
3,458 | |||
| 14 | 3,454 | ||||
| 15 |
Crayoncrayon.com
Global technology solutions provider supporting secure cloud-first digital transformation with a people-first, vendor-agnostic approach and strong ESG commitments. |
3,027 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Multiconsultmulticonsult.no
Multiconsult offers a wide range of consulting, engineering, and design services in various sectors, with a focus on meeting customer expectations and achieving satisfaction |
3,018 | |||
| 17 |
Atea Norge ASatea.no
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 |
2,516 | |||
| 18 | 2,422 | ||||
| 19 | 2,414 | ||||
| 20 | 2,350 | ||||
| 21 |
Bouvet ASAbouvet.no
Leading Scandinavian consulting company providing technology, communication, and management services. Offers development and advisory services to public and private sector clients. |
2,325 | |||
| 22 | 2,285 | ||||
| 23 |
BW Offshorebwoffshore.com
Engineering and operating floating production storage and offloading vessels, providing tailored offshore energy solutions for global markets. |
1,943 | |||
| 24 |
Orkla Food Ingredients ASorklafoodingredients.com
A leading European bakery ingredients manufacturer and distributor with a wide range of products tailored for various customer channels worldwide |
1,889 | |||
| 25 |
Zalariszalaris.com
Providing HR and payroll administration solutions, empowering clients with valuable information to invest in their people, fostering team spirit and achieving high results |
1,822 | |||
| 26 |
PwC Norwaypwc.no
A leading global professional services firm with deep expertise in auditing, advisory, and legal services, operating in 155 countries worldwide |
1,802 | |||
| 27 |
DeepOceandeepoceangroup.com
Integrated provider of safe, high-quality subsea services and technologies for the offshore industry, focusing on survey, installation, maintenance, and project management globally |
1,800 | |||
| 28 |
Elopakelopak.com
A leading global supplier of eco-friendly carton packaging and filling equipment, offering sustainable solutions to reduce plastic waste |
1,683 | |||
| 29 | 1,678 | ||||
| 30 | 1,635 | ||||
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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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