Company lists · Data verified August 2026

Top 25 Law firms based in Oslo, Norway

Name: Law firms based in Oslo, Norway
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 135 companies tracked

This directory lists 135 law firms based in Oslo, Norway, with 3,133 professional contacts and 1,103 email addresses. As of August 2026, Oslo is the single most-represented city among the companies listed.

Law firms are professional service organizations that provide legal advice, representation, and related services through licensed attorneys. This list covers companies that provide legal advice, legal representation, or related legal services through licensed attorneys. Ranked by team size, largest first. Data current as of August 28, 2026.

135Companies

3,133Contacts tracked

1,103Verified emails

145Mobile numbers

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The 25 largest law firms based in Oslo, Norway

Ranked by team size

Top 25 of 135 law firms based in Oslo, Norway, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Wiersholm	Oslo	201-500	340	145
2	Advokatfirmaet Haavind AS	Oslo	201-500	235	160
3	Advokatfirmaet Selmer AS	Oslo	51-200	211	150
4	KVALE	Oslo	51-200	137	62
5	Advokatfirmaet Hjort	Oslo	51-200	132	17
6	Elden Advokatfirma AS	Oslo	51-200	120	62
7	Ræder Bing Advokatfirma AS	Oslo	51-200	95	1
8	Brækhus Advokatfirma	Oslo	51-200	88	46
9	Advokatfirmaet Føyen AS	Oslo	51-200	79	48
10	Advokatfirmaet CLP DA	Oslo	11-50	65	40
11	Codex Advokat Oslo AS	Oslo	51-200	48	24
12	Dalan Advokatfirma DA	Oslo	11-50	41	32
13	Advokatfirmaet Solver AS	Oslo	11-50	41	1
14	Arntzen DE Besche	Oslo	51-200	35	23
15	Advokatfirmaet Legalis AS	Oslo	11-50	32	17
16	Aurlien Vordahl & CO Advokatfirma AS	Oslo	11-50	29	13
17	Advokatfirmaet Berngaard AS	Oslo	11-50	27	18
18	Advokatfirmaet Nicolaisen	Oslo	11-50	24	18
19	AGP Advokater	Oslo	11-50	24	18
20	Riisa Advokatfirma	Oslo	11-50	24	13
21	Advokatfirmaet Rogstad	Oslo	11-50	23	8
22	Advokatfirmaet Lund & CO DA	Oslo	11-50	23	6
23	Advokatfirmaet SGB AS	Oslo	11-50	22	1
24	Advokatfirmaet Molteberg Nilsen	Oslo	11-50	19	8
25	Advokatfirmaet Lippestad	Oslo	11-50	18	8

Showing 25 of 135 law firms based in Oslo, Norway

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Law firms based in Oslo, Norway at a glance

As of Aug 28, 2026

1-10Median size (employees)

OsloLargest hub · 138 HQs

145Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

Law firms by metro in Norway

Metro	Companies
Law firms in Oslo	138
Law firms in Bergen	22
Law firms in Stavanger	14
Law firms in Tromso	11
Law firms in Trondheim	11
Law firms in Alesund	8
Law firms in Kristiansand	7

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “law firms”, with match quality audited by blind human judging, and headquartered in Oslo, Norway.
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: Contact records re-verify on a rolling cadence; 4 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many law firms are listed based in Oslo, Norway?

The directory includes 135 law firms based in Oslo, Norway as of August 2026.

Where are most of the listed law firms located?

Oslo is the single most-represented city among the law firms on the list.

How many contacts and email addresses are available for these law firms?

The list includes 3,133 professional contacts and 1,103 email addresses for the listed law firms.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.