# List of publicly traded companies in Oslo
Tamtam tracks 34 publicly traded 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 1,179. Half of them were founded in 1985 or later.
This selection of publicly traded companies in Oslo shows a concentration of large, established firms. Key players include Yara International, specializing in sustainable crop nutrition, and Norsk Hydro, active in aluminum production and renewables. DNB is a major financial services group, while Gjensidige focuses on general insurance. Other significant companies are Veidekke Norge, a Scandinavian contractor, and Multiconsult, offering consulting and engineering services. These companies are primarily large enterprises with significant employee counts.
A notable characteristic of these companies is their long history, with several founded in the early 20th century or even earlier. Norsk Hydro was founded in 1905, Gjensidige in 1816, and Elkem ASA in 1904. Orkla ASA, an investment company, dates back to 1654. This suggests a mature corporate landscape in Oslo, with many firms having decades or even centuries of operational experience.
π³π΄ Oslo Β· 30 companies Β· Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Yara International](https://www.tamtam.ai/c/yara-international) (yara.com)
A global company focused on sustainable crop nutrition, low-emission energy solutions, and creating a more efficient and nature-positive food value chain | Farming | π³π΄ Oslo | 15,349 | |
| 2 | [Norsk Hydro](https://www.tamtam.ai/c/norsk-hydro) (hydro.com)
Development of sustainable industries including aluminium production, energy, metal recycling, renewables, and batteries with global operations and innovation focus. | Mining | π³π΄ Oslo | 13,192 | 1905 |
| 3 | [DNB](https://www.tamtam.ai/c/dnb) (dnb.no)
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 | π³π΄ Oslo | 11,328 | |
| 4 | [Gjensidige](https://www.tamtam.ai/c/gjensidige) (gjensidige.no)
A top player in the Nordic general insurance market, offering insurance products in multiple countries, along with pension, savings, and healthcare services | Insurance | π³π΄ Oslo | 4,916 | 1816 |
| 5 | [Veidekke Norge](https://www.tamtam.ai/c/veidekke-norge) (veidekke.no)
A leading Scandinavian contractor and property developer offering a wide range of construction services, road maintenance, and production of asphalt, gravel, and concrete | Construction | π³π΄ Oslo | 3,458 | 1936 |
| 6 | [Multiconsult](https://www.tamtam.ai/c/multiconsult) (multiconsult.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 | Construction | π³π΄ Oslo | 3,018 | 1908 |
| 7 | [Atea Norge AS](https://www.tamtam.ai/c/atea-norge-as) (atea.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 | IT Services and IT Consulting | π³π΄ Oslo | 2,516 | 1968 |
| 8 | [Elkem ASA](https://www.tamtam.ai/c/elkem-asa) (elkem.com)
A global provider of advanced material solutions focused on developing silicones, silicon products, and carbon solutions for a sustainable future | Primary Metal Manufacturing | π³π΄ Oslo | 2,350 | 1904 |
| 9 | [Bouvet ASA](https://www.tamtam.ai/c/bouvet-asa) (bouvet.no)
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 | π³π΄ Oslo | 2,325 | 2002 |
| 10 | [BW Offshore](https://www.tamtam.ai/c/bw-offshore) (bwoffshore.com)
Engineering and operating floating production storage and offloading vessels, providing tailored offshore energy solutions for global markets. | Oil and Gas | π³π΄ Oslo | 1,943 | |
| 11 | [Elopak](https://www.tamtam.ai/c/elopak) (elopak.com)
A leading global supplier of eco-friendly carton packaging and filling equipment, offering sustainable solutions to reduce plastic waste | Packaging and Containers Manufacturing | π³π΄ Oslo | 1,683 | 1957 |
| 12 | [Scatec ASA](https://www.tamtam.ai/c/scatec-asa) (scatec.com)
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 | π³π΄ Oslo | 1,412 | 2007 |
| 13 | [AF Gruppen](https://www.tamtam.ai/c/af-gruppen) (afgruppen.no)
A company focused on solving important societal issues, challenging the status quo, and creating new solutions for the future | Construction | π³π΄ Oslo | 1,288 | 1985 |
| 14 | [Orkla ASA](https://www.tamtam.ai/c/orkla-asa) (orkla.com)
Investment company managing a portfolio of consumer-oriented brands and companies, focusing on sustainable value creation through active ownership. | Investment Management | π³π΄ Oslo | 1,245 | 1654 |
| 15 | [StrongPoint](https://www.tamtam.ai/c/strongpoint) (strongpoint.com)
Retail technology company offering solutions to enhance store operations, improve shopping experiences, and streamline online grocery shopping for businesses globally | IT Services and IT Consulting | π³π΄ Oslo | 1,179 | 2002 |
| 16 | [DNO ASA](https://www.tamtam.ai/c/dno-asa) (dno.no)
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 | π³π΄ Oslo | 774 | 1971 |
| 17 | [HΓΆegh Autoliners](https://www.tamtam.ai/c/hoegh-autoliners) (hoeghautoliners.com)
Global shipping company, operating 11 trade routes with a fleet of around 40 vessels, specializing in ocean services for various cargo types worldwide | Maritime Transportation | π³π΄ Oslo | 620 | 1927 |
| 18 | [LINK Mobility](https://www.tamtam.ai/c/link-mobility) (linkmobility.com)
Provider of scalable mobile messaging services and digital communication solutions enabling businesses to connect with customers across various industries. | Telecommunications | π³π΄ Oslo | 613 | 2000 |
| 19 | [Goodtech](https://www.tamtam.ai/c/goodtech) (goodtech.no)
A leader in industrial automation and robotics, specializing in creating smarter, greener, and more sustainable solutions to optimize production processes and increase competitiveness | IT Services and IT Consulting | π³π΄ Oslo | 601 | 1913 |
| 20 | [ABG Sundal Collier](https://www.tamtam.ai/c/abg-sundal-collier) (abgsc.com)
Nordic investment bank providing superior distribution of securities, top-ranked research, and corporate finance advisory services to local and international investors | Investment Banking | π³π΄ Oslo | 465 | 1984 |
| 21 | [Webstep](https://www.tamtam.ai/c/webstep) (webstep.no)
A profitable technology and consulting firm with 400+ IT experts, providing uncomplicated solutions to complex problems for customers across industries | IT Services and IT Consulting | π³π΄ Oslo | 430 | 2000 |
| 22 | [Cool Company Ltd (CoolCo)](https://www.tamtam.ai/c/cool-company-ltd-coolco) (coolcoltd.com)
The company specializes in transporting clean natural gas as liquefied natural gas on a fleet of modern carriers | Maritime Transportation | π³π΄ Oslo | 384 | 2022 |
| 23 | [Pexip](https://www.tamtam.ai/c/pexip) (pexip.com)
It provides seamless video communication solutions for various organizations, focusing on security and innovation across multiple industries and environments. | Software Development | π³π΄ Oslo | 325 | 2012 |
| 24 | [Nel Hydrogen](https://www.tamtam.ai/c/nel-hydrogen) (nelhydrogen.com)
A hydrogen company listed on the Oslo Stock Exchange, specializing in hydrogen production plants, fueling stations, and power-to-gas solutions for various industries | Renewable Energy Equipment Manufacturing | π³π΄ Oslo | 323 | |
| 25 | [Arribatec Group](https://www.tamtam.ai/c/arribatec-group) (arribatec.com)
Global provider of digital business solutions, focusing on ERP, system integration, and CPM Emphasizing innovative use of IT for competitive advantage | IT Services and IT Consulting | π³π΄ Oslo | 294 | |
| 26 | [Entra ASA](https://www.tamtam.ai/c/entra-asa) (entra.no)
Entra develops offices, commercial buildings, and urban areas designed for long-term enjoyment, offering advanced technology and services for seamless user experiences | Real Estate | π³π΄ Oslo | 229 | 2000 |
| 27 | [Frontline Management AS](https://www.tamtam.ai/c/frontline-management-as) (frontlineplc.cy)
A management company overseeing a Cyprus-based oil tanker company with one of the world's largest fleets, specializing in international crude oil transportation on major stock exchanges | Maritime Transportation | π³π΄ Oslo | 183 | 1996 |
| 28 | [Photocure](https://www.tamtam.ai/c/photocure) (photocure.com)
Innovative technology improves bladder cancer treatment by making cancer cells glow pink, leading to better health outcomes for patients worldwide | Pharmaceutical Manufacturing | π³π΄ Oslo | 134 | 1993 |
| 29 | [Vow ASA](https://www.tamtam.ai/c/vow-asa) (vowasa.com)
A company and its subsidiaries specialize in converting biomass and waste into clean energy and valuable resources, promoting industry decarbonization and material recovery | Renewable Energy Equipment Manufacturing | π³π΄ Oslo | 106 | 1993 |
| 30 | [CAVOUR](https://www.tamtam.ai/c/cavour) (cavour.com)
A clothing company founded by brothers in 2013, focused on well-made, affordable garments that offer a custom-made feel Expanding internationally | Retail | π³π΄ Oslo | 88 | 2014 |
## 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 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)
- [Corporate groups and holding companies in Oslo](https://www.tamtam.ai/l/holding-companies-oslo) (36)
- [Retail companies in Oslo](https://www.tamtam.ai/l/retail-companies-oslo) (35)
- [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
- [Publicly traded companies in Norway](https://www.tamtam.ai/l/publicly-traded-companies-norway) (99)
## The same list elsewhere
- [Publicly traded companies in the world](https://www.tamtam.ai/l/publicly-traded-companies-in-the-world) (11,535)
- [Publicly traded companies in Europe](https://www.tamtam.ai/l/publicly-traded-companies-in-europe) (3,623)
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Source: https://www.tamtam.ai/l/publicly-traded-companies-oslo