# Corporate groups and holding companies headquartered in Oslo

Tamtam tracks 36 corporate groups and holding companies headquartered in Oslo. This list ranks the 30 largest by number of employees on LinkedIn, led by Statkraft, Strawberry and Veidekke Norge. Their median headcount is 774. Half of them were founded in 1986 or later.

These corporate groups and holding companies in Oslo are mainly active in construction, food and beverage, and renewable energy. The list includes established firms such as Statkraft, a global leader in renewable energy, and Veidekke Norge, a Scandinavian contractor. Other notable companies are TINE, a dairy products cooperative, and OBOS, a membership organization focused on housing.

Most of these companies have a long history, with several founded in the late 19th or early 20th century, like Statkraft (1895) and Multiconsult (1908). This indicates a presence of well-established businesses rather than newly formed ventures.

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

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [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 |
| 2 | [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 |  |
| 3 | [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 |
| 4 | [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 |
| 5 | [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 |  |
| 6 | [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 |  |
| 7 | [OBOS](https://www.tamtam.ai/c/obos) (obos.no)<br>A membership organization with over 390,000 members, focused on fulfilling housing dreams, managing properties securely, and supporting cultural, sports, and humanitarian initiatives | Real Estate | 🇳🇴 Oslo | 1,864 | 1929 |
| 8 | [AIDER](https://www.tamtam.ai/c/aider) (aider.no)<br>A leading competence house redefining the accounting industry with a focus on technology and skilled professionals to help leaders succeed | Accounting | 🇳🇴 Oslo | 1,540 | 2019 |
| 9 | [ASKO](https://www.tamtam.ai/c/asko-oslo) (asko.no)<br>The company provides groceries to NorgesGruppen's chains and the food service market across Norway through 13 regional companies and 9 Storcash stores | Transportation, Logistics, Supply Chain and Storage | 🇳🇴 Oslo | 1,507 | 1866 |
| 10 | [Scatec ASA](https://www.tamtam.ai/c/scatec-asa) (scatec.com)<br>Leading renewable energy solutions provider in emerging markets, developing, building, owning, and operating clean energy plants globally with over 46 GW capacity | Renewable Energy Power Generation | 🇳🇴 Oslo | 1,412 | 2007 |
| 11 | [AF Gruppen](https://www.tamtam.ai/c/af-gruppen) (afgruppen.no)<br>A company focused on solving important societal issues, challenging the status quo, and creating new solutions for the future | Construction | 🇳🇴 Oslo | 1,288 | 1985 |
| 12 | [Orkla ASA](https://www.tamtam.ai/c/orkla-asa) (orkla.com)<br>Investment company managing a portfolio of consumer-oriented brands and companies, focusing on sustainable value creation through active ownership. | Investment Management | 🇳🇴 Oslo | 1,245 | 1654 |
| 13 | [BAMA Gruppen AS](https://www.tamtam.ai/c/bama-gruppen-as) (bama.no)<br>A leading Nordic company specializing in fresh fruits, vegetables, berries, and potatoes, with a strong presence in Europe and a wide product range including flowers, drinks, and on-the-go products | Food and Beverage Services | 🇳🇴 Oslo | 1,049 | 1886 |
| 14 | [Glamox](https://www.tamtam.ai/c/glamox) (glamox.com)<br>A Norwegian industrial group that develops, manufactures, and distributes sustainable lighting solutions for professional markets worldwide, with a focus on marine, offshore, and building sectors | Appliances, Electrical, and Electronics Manufacturing | 🇳🇴 Oslo | 996 |  |
| 15 | [DNO ASA](https://www.tamtam.ai/c/dno-asa) (dno.no)<br>Norwegian oil and gas operator with operations in the Middle East, North Sea, and West Africa, holding stakes in various licenses worldwide | Oil and Gas | 🇳🇴 Oslo | 774 | 1971 |
| 16 | [JCP](https://www.tamtam.ai/c/jcp) (jcp.no)<br>A multidisciplinary communication agency offering event, advertising, PR, and retail services, focused on captivating and engaging people through creative solutions | Public Relations and Communications Services | 🇳🇴 Oslo | 738 | 1998 |
| 17 | [Amedia](https://www.tamtam.ai/c/amedia) (amedia.no)<br>Amedia is Norway's largest publisher of editor-controlled media, reaching over two million readers daily with a wide range of news, debate, and entertainment content | Media Production | 🇳🇴 Oslo | 704 |  |
| 18 | [Eika](https://www.tamtam.ai/c/eika) (eika.no)<br>An alliance of independent banks and a housing credit provider delivering efficient banking operations and products, focusing on sustainable development | Banking | 🇳🇴 Oslo | 700 | 1997 |
| 19 | [NoA - The North Alliance](https://www.tamtam.ai/c/noa-the-north-alliance) (thenorthalliance.com)<br>A Nordic-based creative and tech group with over 1200 experts focused on driving customer-driven growth in Sweden, Norway, Denmark, Finland, and Poland | IT Services and IT Consulting | 🇳🇴 Oslo | 623 | 2014 |
| 20 | [LINK Mobility](https://www.tamtam.ai/c/link-mobility) (linkmobility.com)<br>Provider of scalable mobile messaging services and digital communication solutions enabling businesses to connect with customers across various industries. | Telecommunications | 🇳🇴 Oslo | 613 | 2000 |
| 21 | [Pareto Securities](https://www.tamtam.ai/c/pareto-securities) (paretosec.com)<br>Nordic-based financial services firm providing financing solutions and investment opportunities for companies and investors worldwide through industry knowledge and global network | Investment Banking | 🇳🇴 Oslo | 497 | 1986 |
| 22 | [Mantena Nordic](https://www.tamtam.ai/c/mantena-nordic) (mantena.no)<br>The company specializes in maintaining railway vehicles in the Nordic region, from large locomotives to advanced components, with a focus on innovation and timely delivery | Rail Transportation | 🇳🇴 Oslo | 452 | 2002 |
| 23 | [Unibuss AS](https://www.tamtam.ai/c/unibuss-as) (unibuss.no)<br>A transportation company in Eastern Norway operating over 700 route buses, 25 tour buses, and express services to airports with around 1,800 employees | Ground Passenger Transportation | 🇳🇴 Oslo | 449 |  |
| 24 | [Flokk](https://www.tamtam.ai/c/flokk) (flokk.com)<br>Leading European manufacturer of high-quality workplace furniture, with a focus on sustainability and well-being through design collaboration with global experts | Furniture and Home Furnishings Manufacturing | 🇳🇴 Oslo | 429 | 2007 |
| 25 | [Amesto](https://www.tamtam.ai/c/amesto) (amesto.no)<br>A family-owned business specializing in business solutions, artificial intelligence, IT services, accounting, HR, and staffing, promoting a culture of inquiry and sustainability | IT Services and IT Consulting | 🇳🇴 Oslo | 403 | 2002 |
| 26 | [Gyldendal Norsk Forlag](https://www.tamtam.ai/c/gyldendal-norsk-forlag) (gyldendal.no)<br>For nearly a century, the company has played a vital role in Norwegian society by creating and disseminating knowledge, literature, and entertainment | Book and Periodical Publishing | 🇳🇴 Oslo | 397 |  |
| 27 | [The Norwegian Institute for Water Research (NIVA)](https://www.tamtam.ai/c/the-norwegian-institute-for-water-research-niva) (niva.no)<br>A nationally leading foundation specializing in environmental issues related to water, conducting research and sharing expertise to address water management globally | Environmental Services | 🇳🇴 Oslo | 362 | 1958 |
| 28 | [Mio BPA](https://www.tamtam.ai/c/mio-bpa) (mio.no)<br>Specialists in user-directed personal assistance (BPA) for individuals with disabilities, providing assistance in planning and establishing personalized BPA arrangements tailored to individual needs | Health and Human Services | 🇳🇴 Oslo | 357 | 2014 |
| 29 | [Baneservice](https://www.tamtam.ai/c/baneservice) (baneservice.no)<br>Providing machine and contractor services for railway-related activities, specializing in construction and maintenance of tracks, signal systems, and more Owned by government | Construction | 🇳🇴 Oslo | 356 | 2005 |
| 30 | [Stiftelsen Norsk Luftambulanse](https://www.tamtam.ai/c/stiftelsen-norsk-luftambulanse) (norskluftambulanse.no)<br>An ideal organization advancing life-saving medical care through air ambulance services, research, education, fundraising, and special training for pilots and medical personnel | Hospitals and Health Care | 🇳🇴 Oslo | 328 | 1977 |

## 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.

## More company lists in Oslo

- [The largest companies in Oslo](https://www.tamtam.ai/l/largest-companies-oslo) (768)
- [Multinational companies in Oslo](https://www.tamtam.ai/l/multinational-companies-oslo) (240)
- [SaaS companies in Oslo](https://www.tamtam.ai/l/saas-companies-oslo) (100)
- [Software Development companies in Oslo](https://www.tamtam.ai/l/software-development-companies-oslo) (95)
- [Retail chains in Oslo](https://www.tamtam.ai/l/retail-chains-oslo) (92)
- [Critical infrastructure operators in Oslo](https://www.tamtam.ai/l/critical-infrastructure-operators-oslo) (72)
- [Financial services firms in Oslo](https://www.tamtam.ai/l/financial-services-firms-oslo) (58)
- [Professional services firms in Oslo](https://www.tamtam.ai/l/professional-services-firms-oslo) (53)
- [Companies with in-house R&D in Oslo](https://www.tamtam.ai/l/r-and-d-companies-oslo) (50)
- [IT Services and IT Consulting companies in Oslo](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-oslo) (50)
- [Public sector organisations in Oslo](https://www.tamtam.ai/l/public-sector-organisations-oslo) (50)
- [Subscription businesses in Oslo](https://www.tamtam.ai/l/subscription-businesses-oslo) (48)
- [Financial Services companies in Oslo](https://www.tamtam.ai/l/financial-services-companies-oslo) (47)
- [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)
- [IT services companies in Oslo](https://www.tamtam.ai/l/it-services-companies-oslo) (37)
- [Companies with a mobile app in Oslo](https://www.tamtam.ai/l/companies-with-mobile-app-oslo) (36)
- [Retail companies in Oslo](https://www.tamtam.ai/l/retail-companies-oslo) (35)
- [Publicly traded companies in Oslo](https://www.tamtam.ai/l/publicly-traded-companies-oslo) (34)
- [Hotel and hospitality groups in Oslo](https://www.tamtam.ai/l/hospitality-groups-oslo) (33)
- [E-commerce companies in Oslo](https://www.tamtam.ai/l/ecommerce-companies-oslo) (31)
- [Manufacturers in Oslo](https://www.tamtam.ai/l/manufacturers-oslo) (31)
- [AI companies in Oslo](https://www.tamtam.ai/l/ai-companies-oslo) (30)
- [Energy companies in Oslo](https://www.tamtam.ai/l/energy-companies-oslo) (27)

## The same list elsewhere in Norway

- [Corporate groups and holding companies in Norway](https://www.tamtam.ai/l/holding-companies-norway) (100)

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