Companies based in Oslo

developer of the Opera browser

Norwegian aluminum and renewable energy company

stock exchange located in Oslo, Norway

Norwegian bank

company

Architecture firm (est. 1989) based in Oslo and New York

Norwegian company with online classifieds

Norwegian shipyard operator

Funcom Oslo AS (formerly Funcom N.V. and Funcom Productions AS) is a Norwegian video game developer and publisher that specializes in online games. It is best known for the massively multiplayer online role-playing game (MMORPG) titles Conan Exiles, Age of Conan, Anarchy Online, The Secret World – and The Longest Journey series of adventure games. The company has offices in Oslo, Norway; North Carolina, US; Lisbon, Portugal; Bucharest, Romania; and Stockholm, Sweden. It also had offices in Beijing, Dublin, and Montreal previously. It is now owned by the Chinese media conglomerate Tencent.

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Norwegian manufacturer and retailer of clothing and sports equipment and a subsidiary of the Canadian retail chain Canadian Tire

Storebrand is a financial services company in Norway. By volume, the company's main activities are related to life insurance and pension savings. However, the company also has major divisions working on investments, banking and, until 1999 and again since 2006, P&C insurance products. Through its acquisition of Swedish SPP from Handelsbanken in 2007, Storebrand gained a sizable division dedicated to the Swedish market for life insurance.

Gjensidige Forsikring ASA is a Norwegian insurance company. The company traces its roots back to 1816 when a fire mutual was founded as Land Gjensidige Brandkasse in what is today Innlandet county. Gjensidige demutualised and listed on the Oslo Stock Exchange in December 2010. The firm, headquartered in Oslo, has a market share of some 26% (2021) in the Norwegian insurance market. The company has 36 branch offices in Norway, not including affiliated fire mutuals, and 1 million customers. Gjensidige has subsidiaries in Denmark, Sweden and The Baltics.

Nord Pool Spot as energy exchange for nordic physical markets

Ruter AS is the public transport authority for Oslo and Akershus counties in Norway. Formally a limited company – 60% of its shares are owned by the Oslo county municipality and 40% by that of Akershus – it is responsible for the administration, funding, and marketing (but not direct operation) of public transport in the two counties, including buses, the Oslo Metro (T-banen i Oslo), Oslo Trams (Trikken i Oslo), and ferry services. Ruter also holds agreements with Entur concerning the regulation of fares on local and regional train services operated within the two counties.

H. Aschehoug & Co. (W. Nygaard), commonly known as Aschehoug, () is one of the largest independent publishing companies in Norway, founded in 1872. Headquartered in Oslo, the publishing house has 480 employees. The Aschehoug group also comprises other publishing houses which it owns partially or wholly. The name Aschehoug can be directly translated as "ash hill".

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Visma Software International AS is a privately held company headquartered in Oslo, Norway, that provides cloud accounting, payroll, invoicing, and HR business software products. The majority of the company is owned by HgCapital, a private equity firm. The Group's market segments include small business, medium business, public, and ecosystem. The Visma Group operates across Europe and a number of countries in Latin America.

defunct Norway's largest airline, created by a merger between Scandinavian Airlines' Norwegian division and Braathens in 2004

Norwegian software company

NorgesGruppen ASA is a Norwegian grocery wholesaling group which also runs various retail outlets. With a 43,2 % market share in 2018, NorgesGruppen was the largest player in the Norwegian grocery retail market. The business dates back to 1866 when the wholesale activity started up in the name of Joh. Johannson. NorgesGruppen is frequently accused of abusing its dominant market position in Norway to limit competition in the sector and has been fined by the Norwegian Competition Authority for these practices.

company in Oslo, Norway

solar power company in Singapore

Amedia AS is a Norwegian media group owned by the Amedia Foundation and is considered the country’s largest newspaper publisher.

Scatec ASA, formerly Scatec Solar ASA is a Norwegian company which specializes in renewable energy systems. The company was founded by Dr. Alf Bjørseth in 2007. The two major shareholders of the company are Scatec Innovation AS and Equinor. In November 2020, the company changed its name to Scatec ASA to reflect its broadened strategy going from solar company to renewable company.

developer of the Vivaldi browser

Samfoto Picture Agency was a photographer-run Norwegian photography agency established in 1976. In 2011, it was bought by NTB Scanpix. Samfoto was photographer-run and primarily sold stock photographs to Norwegian media.

Nor-Cargo AS is a Norwegian cargo transport and logistics company and subsidiary of Posten Norge, the Norwegian Postal Service. It operates road, water and air transport. The company operates through 32 Terminals with 1,000 long-distance and 600 distribution trucks. In addition, the division Nor-Cargo Thermo operates 500 temperature-controlled trucks.

EVRY A/S was a Norwegian information technology company that supplied services related to computing, including operation, outsourcing and online banking. The company was headquartered in Oslo. It was established through a merger between EDB Business Partner and ErgoGroup in 2010 and had 10,000 employees at 135 offices in 16 countries.

one of the oldest publishing houses of Norway

24SevenOffice is a Norwegian software company headquartered in Oslo, Norway, with offices in Stockholm, Sweden and London, United Kingdom. Founded in 1997, the company specializes in web-based (SaaS) ERP and CRM systems.

Norwegian listed sports equipment chain

Norwegian energy retail company, formed by the 2010 separation of the downstream business of Statoil ASA into a separate listed company

Norwegian civil engineering and construction company

Sporveien Oslo AS is a municipally owned public transport operator in Oslo, Norway. It operates the trackage and maintains the stock of the Oslo Metro and Oslo Tramway. In 2022, its 3,306 employees transported 217 million passengers. Since 2008 it has operated on contract with the public transport authority Ruter.

Norfund is a development finance institution established by the Norwegian Storting (parliament) in 1997 and owned by the Norwegian Ministry of Foreign Affairs. The fund receives its investment capital from the state budget, and surpluses in the portfolio are reinvested. Its head office is located in Oslo with local offices in Thailand, Costa Rica, Kenya, South Africa, Bangkok and Ghana.

Veidekke () is the largest Norwegian construction and civil engineering company and the fourth largest in Scandinavia. Veidekke's business involves a network of Scandinavia construction and engineering operations, rehabilitation work, major heavy construction contracts and development of dwellings for the company's own account as well as buildings for public use. They recently acquired Reinertsen's civil engineering arm. Other business segments are asphalt operations, production of crushed stone and gravel (aggregates) and maintenance of public roads.

Defunct Norwegian bank, now merged into Den norske Bank

Entra ASA is a Norwegian real estate company, headquartered in Oslo, Norway.

Norwegian internet company

defunct tram company in Oslo, Norway

Norwegian bank, 1848 to 2000

defunct tram company in Oslo, Norway

Norwegian media group

Kværner was a Norwegian engineering and construction services company that existed between 1853 and 2005.

public company operating the tram system in Oslo, Norway

Norwegian publishing house

Norwegian company

company

RiksTV is the distributor of pay television in the Norwegian digital terrestrial television network.

defunct Norwegian semiconductor company

Renewable company

Defunct transport company

Norwegian media conglomerate

Commodities exchange and financial energy market for Nordic countries

Multiconsult is an engineering consultancy with approximately 2800 employees operating in Norway, elsewhere in Europe and globally. The company is listed on the Oslo Stock Exchange.

Varner-Gruppen AS is a textile firm in Norway with approximately 500 stores around the country, including , , , Dressmann and Dressmann XL, , Volt, and Levi's Store. The stores are located in Norway, Sweden, Finland, and Iceland. The group has more than 1,100 stores in total .

thumb|left|Ferry on its way from Vippetangen to Bleikøya. Hovedøya in the background. Oslo Fergene was a passenger ferry operator in Oslo, Norway.

bookstore chain in Norway