Company lists · Data refreshed September 2026

Top 25 Business law firms based in Norway

Name: Business law firms based in Norway
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 260 companies tracked

RevenueBase identified 260 business law firms headquartered in Norway as of September 2026 and tracks 4,390 professional contacts across them, including 1,549 with verified work emails and 164 with mobile numbers. Oslo is the largest hub.

This list covers business law firms headquartered in Norway, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

260Companies

4,390Contacts tracked

1,549Verified emails

164Mobile numbers

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The 25 largest business law firms based in Norway

Ranked by team size

Top 25 of 260 business law firms based in Norway, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to business law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Thommessen	Strong evidence	Oslo, NorwayHQ checked Sep 20, 2026	201-500	420 contacts →
	Strong evidence “Thommessen is one of Norway’s leading commercial law firms, with offices in Oslo, Bergen, Stavanger and London.” Source: RevenueBase Database · checked Sep 20, 2026
2	Wikborg Rein	Strong evidence	Oslo, NorwayHQ checked Sep 20, 2026	201-500	386 contacts →
	Strong evidence “Wikborg Rein is an international law firm with headquarters in Oslo and offices in Bergen, London, Singapore and Shanghai.” Source: RevenueBase Database · checked Sep 20, 2026
3	Wiersholm	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	201-500	334 contacts →
	Indirect evidence “The roots of Advokatfirmaet Wiersholm extend back to 1875.” Source: RevenueBase Database · checked Sep 20, 2026
4	Advokatfirmaet Haavind AS	Strong evidence	Vika, NorwayHQ checked Sep 20, 2026	201-500	231 contacts →
	Strong evidence “Haavind is one of Norway’s leading law firms.” Source: RevenueBase Database · checked Sep 20, 2026
5	Simonsen Vogt Wiig	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	201-500	230 contacts →
	Indirect evidence “Simonsen Vogt Wiig’s 180 lawyers assist national and international clients from offices in Oslo, Bergen, Trondheim, Stavanger, Kristiansand, Tromsø and Singapore.” Source: RevenueBase Database · checked Sep 20, 2026
6	Advokatfirmaet Selmer AS	Strong evidence	Oslo, NorwayHQ checked Sep 20, 2026	51-200	211 contacts →
	Strong evidence “Advokatfirmaet Selmer was founded in 1985 and is one of the largest and most recognized corporate law firms in Norway.” Source: RevenueBase Database · checked Sep 20, 2026
7	Advokatfirmaet Hjort	Strong evidence	Oslo, NorwayHQ checked Sep 20, 2026	51-200	132 contacts →
	Strong evidence “We assist our clients with advice and procedural assignments in all key areas of law.” Source: RevenueBase Database · checked Sep 20, 2026
8	Elden Advokatfirma AS	Strong evidence	Oslo, NorwayHQ checked Sep 20, 2026	51-200	118 contacts →
	Strong evidence “Law firm based in Oslo, Norway with branch offices in Bergen, Sandefjord, Stavanger, Gol, Haugesund, Tromsø and Hamar.” Source: RevenueBase Database · checked Sep 20, 2026
9	Ræder Bing Advokatfirma AS	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	51-200	94 contacts →
	Indirect evidence “Ræder Bing er et ledende advokatfirma med bred forretningsjuridisk kompetanse.” Source: RevenueBase Database · checked Sep 20, 2026
10	Brækhus Advokatfirma	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	51-200	84 contacts →
	Indirect evidence “Brækhus has extensive and specialized experience in assisting clients doing business in Norway.” Source: RevenueBase Database · checked Sep 20, 2026
11	Advokatfirmaet Føyen AS	Strong evidence	Oslo, NorwayHQ checked Sep 20, 2026	51-200	80 contacts →
	Strong evidence “Advokatfirmaet Føyen AS is one of Norway's leading law firms within its specialist fields of real estate, ICT media and employment.” Source: RevenueBase Database · checked Sep 20, 2026
12	Harris Advokatfirma AS	Indirect evidence	Bergen, NorwayHQ checked Sep 20, 2026	51-200	58 contacts →
	Indirect evidence “Advokatfirmaet Harris ble etablert i 1924 og var opprinnelig engasjert i alle typer oppdrag innenfor fast eiendom, herunder ekspropriasjon, hvor Harris representerte…” Source: RevenueBase Database · checked Sep 20, 2026
13	Codex Advokat Oslo AS	Strong evidence	Oslo, NorwayHQ checked Sep 20, 2026	51-200	48 contacts →
	Strong evidence “Codex Law Firm provides general legal services and is a trusted partner for all legal issues.” Source: RevenueBase Database · checked Sep 20, 2026
14	Haver Advokatfirma AS	Indirect evidence	Stavanger, NorwayHQ checked Sep 20, 2026	11-50	44 contacts →
	Indirect evidence “I over 100 år har Haver Advokatfirma vært en trygg juridisk partner for næringslivet.” Source: RevenueBase Database · checked Sep 20, 2026
15	Dalan Advokatfirma DA	Strong evidence	Oslo, NorwayHQ checked Sep 20, 2026	11-50	41 contacts →
	Strong evidence “Dalan Law firm was founded in 1992 following a merger between the firms Dalan, Sigmond and Swang (founded in 1876) and the lawyers Lous, Hagemann, Arff-Pettersen and Løken…” Source: RevenueBase Database · checked Sep 20, 2026
16	Svensson Nøkleby Advokatfirma ANS	Indirect evidence	Drammen, NorwayHQ checked Sep 20, 2026	11-50	41 contacts →
	Indirect evidence “Svensson Nøkleby er regionens største forretningsjuridiske advokatfirma.” Source: RevenueBase Database · checked Sep 20, 2026
17	Advokatfirmaet Solver AS	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	11-50	41 contacts →
	Indirect evidence “Solver bistår både virksomheter og privatpersoner med problemløsning i vid forstand – vi tenker lengre enn den enkeltstående konflikten som har oppstått.” Source: RevenueBase Database · checked Sep 20, 2026
18	Advokatfirmaet Halvorsen & CO AS	Indirect evidence	Lillestrøm, NorwayHQ checked Sep 20, 2026	11-50	37 contacts →
	Indirect evidence “Advokatfirmaet Halvorsen & Co tilbyr juridiske tjenester innenfor de fleste juridiske områder, med særlig fokus på generell og spesiell forretningsjus, fast eiendom og…” Source: RevenueBase Database · checked Sep 20, 2026
19	Advokatfirmaet Legalis AS	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	11-50	32 contacts →
	Indirect evidence “Advokatfirmaet Legalis AS bistår privatpersoner innen alle sivile rettsområder, blant annet arv, skifte, familierett, fast eiendom, kjøpsrett og trygderett.” Source: RevenueBase Database · checked Sep 20, 2026
20	Advokatfirmaet Berngaard AS	Strong evidence	Oslo, NorwayHQ checked Sep 20, 2026	11-50	28 contacts →
	Strong evidence “BERNGAARD is a law firm in Oslo with vast expertise in construction law, technology and media, and public procurement.” Source: RevenueBase Database · checked Sep 20, 2026
21	Aurlien Vordahl & CO Advokatfirma AS	Indirect evidence	Oslo, NorwayHQ checked Sep 20, 2026	11-50	28 contacts →
	Indirect evidence “Aurlien Vordahl & Co Advokatfirma AS tilbyr høyt kvalifisert juridisk bistand til privatpersoner, bedrifter, organisasjoner og foreninger innenfor en rekke rettsområder.” Source: RevenueBase Database · checked Sep 20, 2026
22	Advokatfirmaet Dehn	Indirect evidence	Sandvika, NorwayHQ checked Sep 20, 2026	11-50	27 contacts →
	Indirect evidence “Advokatfirmaet Dehn har kompetanse og erfaring på de fleste rettsområder, og bistår både virksomheter, privatpersoner og det offentlige.” Source: RevenueBase Database · checked Sep 20, 2026
23	Advokatfirmaet Økland & CO AS	Strong evidence	Lillestrøm, NorwayHQ checked Sep 20, 2026	11-50	27 contacts →
	Strong evidence “Økland & Co is a well-established law firm, which covers the need for legal advice in business.” Source: RevenueBase Database · checked Sep 20, 2026
24	Pretor Advokat AS	Indirect evidence	Trondheim, NorwayHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “Pretor har vært norsk og trøndersk næringslivs advokat i over 25 år.” Source: RevenueBase Database · checked Sep 20, 2026
25	AGP Advokater	Strong evidence	Oslo, NorwayHQ checked Sep 20, 2026	11-50	24 contacts →
	Strong evidence “AGP is a transactions, capital markets and corporate focussed law firm in Oslo, Norway.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: business law firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names business law firms.
Partial evidence: Its own public description names part of business law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business law firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 260 business law firms based in Norway

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Business law firms based in Norway at a glance

As of Sep 20, 2026

35.3%Verified-email coverage

3.7%Mobile-number coverage

16.9Average contacts per company

1-10Median size (employees)

39.6%Largest-city concentration · Oslo

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

160

11-50

51-200

201-500

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 22.0d

1,1810–30

33331–60

1561–90

090–180

20180+

Company record updated

Median 72.0d

00–30

77031–60

2,81561–90

64490–180

161180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among business law firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Norway whose own description of what they do matches “business law firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names business law firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among business law firms, and records with no verified work email. Companies headquartered outside Norway are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,549 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Business law firms by metro

Business law firms in Oslo103

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names business law firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many business law firms are there based in Norway?

RevenueBase identified 260 business law firms headquartered in Norway as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Thommessen, headquartered in Oslo, tops this list with the largest team on record.

Which city has the most business law firms?

Oslo leads with 103 headquartered companies, followed by Bergen (15) and Stavanger (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,549 verified decision-maker contacts tracked across these 260 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.