Unique individuals -

leading together

The modern law firm with a proud history

Arntzen de Besche has been a critical player in shaping the laws in Norway since 1870. We are proud of our heritage, yet our ability to demonstrate agile mindedness in our practice allows us to be one of the leading law firms in the country.

With locations around Oslo, Stavanger and Trondheim and a team of 140 specialists across different sectors, we provide our clients with an integrated, proactive approach to their legal and business needs.

Our vision is to be our customer's best advisor
179 unique individuals - leading together
Climate-neutral since 2019
About us

Join us

We are an inclusive law firm with an ethos focussed on teamwork and producing academic quality work.

We aim to assist you to become a skilled business lawyer. We will provide you with a challenging environment to become proficient while facilitating you to grow into your role and thrive professionally and socially.

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Broad professional environment adapted to your industry

With experience in most industries, we provide our clients with superb legal knowledge and wisdom, showing deep business and industry understanding in all areas of business law. That means that you get the most outstanding team to help you across practice areas.

Our clients range from large internationally listed companies, financial institutions, governments and organisations to small businesses. Our expertise allows us to resolve complex disputes, assist on transactions and provide short- and long-term strategic advice by providing an integrated and proactive approach to your needs. We see the possibilities and take you where you want to go.

We see the possibilities and take you where you want to go.



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12 April 2022

Maintains strong results on Legal 500's ratings

The renowned legal rating agency Legal 500 has published the results from its 2022 edition. We consolidate our position as one of Norway’s leading law firms and are rated in 18 of 20 practice areas. We obtain Tier 1 and Tier 2 ratings within 13 practice areas. 47 of our lawyers have been recognized within their respective areas of expertise.

8 April 2022

Newsletter – proposed amendments to the petroleum tax regime

The Government announced on a press conference 31 August 2021 that they would propose amendments to the petroleum tax act. The Ministry of Finance then 3 September 2021 issued a public consultation paper where it is proposed that the rules on depreciation and tax-free income in the special tax for petroleum from 2022 should be replaced by immediate expense recognition of investments (cash flow tax – direct tax deduction). The Ministry of Finance emphasized that the proposed amendment is similar to amendment that entered into force for hydroelectric power with effect for investments made from 2021.

17 March 2022

Good results on Chambers Europe

We are proud to be ranked as a top ranked firm in Norway on the newly published rating of Chambers Europe. 23 of our lawyers are ranked as “Leaders in their field”. Chambers is one of the most recognized global rating agencies of law firms and lawyers. The results are based on interviews with clients and partners, in addition to extensive in-depth research conducted by Chambers' researchers.

21 February 2022

Arntzen de Besche has assisted Nutreco in a strategic investment in Andfjord Salmon

Animal research and nutrition specialist Nutreco and the Norwegian seafood group Holmøy are taking part in a private placement in Andfjord Salmon. In addition, Andfjord Salmon has entered into an operational feed supply agreement with Nutreco’s aquaculture business line, Skretting. We are proud to assist Nutreco as legal advisors in this process.

14 February 2022

Offshore wind on the NCS: Government press conference and public consultation

On Wednesday 9 February, four Norwegian ministers presented the government’s plans for the next steps in the development of offshore wind on the NCS. Prime Minister Jonas Gahr Støre (Labour) lead the presentation, held in Oslo Harbour. A public consultation letter was published later the same day.

24 January 2022

Arntzen de Besche has advised OMV on the sale of the Wisting oil field

OMV, an international integrated oil, gas and chemicals company headquartered in Vienna, Austria, sold its 25 percent stake in the Wisting oil field to Lundin Energy in a transaction that successfully closed before Christmas on 17 December 2021 (see below link to OMV’s press release). We are proud to have acted as OMV’s legal advisor on this transaction.

8 February 2022

Arntzen de Besche assists Nordlaks with the hydra innovation project

We are proud to assist Nordlaks with another exciting and complex innovation project. Hydra is a semi-closed production tank for aquaculture. The technology was invented and designed in Norway, and will be built in Turkey by the Gemak shipyard group from the summer until delivery in the first quarter of 2024.

Values and engagement

We are committed to the environment and sustainability. We are a proud member of the climate network Skift. Together with a number of other business players, we are working on launching concrete measures to help Norway achieve their sustainability goals by 2030.

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