Norway’s legal market is defined by a highly competitive “Top Tier” of independent firms that combine deep local expertise in shipping, energy, and aquaculture with international reach. In 2026, the market is particularly active in energy transition projects and high-value M&A across the Nordic region.
Based on the 2026 Legal 500 and Chambers & Partners Global rankings, here are the top 10 law firms leading the market in Norway.
1. Thommessen
Thommessen is widely regarded as the premier firm in Norway. In the 2026 rankings, it secured the highest number of Tier 1 rankings (17 in total), covering everything from Banking & Finance to TMT. They are the primary choice for the most complex M&A and capital markets transactions in the country, often acting as the lead advisor for Norway’s largest blue-chip corporations.
2. Advokatfirmaet Schjødt
Schjødt is a powerhouse with an increasingly strong Nordic footprint. In 2026, it achieved the rare distinction of being the only Norwegian firm with top rankings across all categories in the Chambers Global guide. Known for being highly commercial and aggressive in M&A and Dispute Resolution, Schjødt is the go-to for high-stakes corporate litigation and private equity deals.
3. Wiersholm
Wiersholm is one of the “Big Four” in Norway, renowned for its technical excellence and sophisticated client base. They excel in Tax, Employment, and Corporate Governance. Their Banking and Finance team is exceptionally strong, often representing international syndicates and major Nordic financial institutions.
4. BAHR
BAHR is synonymous with prestige and is a dominant force in Asset Management, Real Estate, and Oil & Gas. They have a reputation for being involved in the most significant “National Interest” deals and are highly ranked for their Tax litigation capabilities. Their deep integration with the Norwegian maritime and energy sectors is a key pillar of their success.
5. Wikborg Rein
Wikborg Rein is Norway’s most international firm, with a significant presence in London, Singapore, and Shanghai. This makes them the undisputed leader in Shipping, Maritime Law, and Offshore Energy. They are the first choice for clients navigating the complexities of international trade and maritime disputes involving Norwegian interests.
6. Advokatfirmaet Haavind
Haavind has seen a massive rise in prestige over the last few years, firmly establishing itself among the elite. They are particularly dominant in sectors like Construction, Renewable Energy, and Fish Farming (Aquaculture). In 2026, they are highly sought after for large-scale infrastructure projects and green energy transition mandates.
7. Simonsen Vogt Wiig
With a strong presence across Norway’s key coastal cities (Oslo, Bergen, Stavanger, Tromsø), Simonsen Vogt Wiig is a top choice for the Oil & Gas and TMT sectors. They are known for their practical, industry-focused advice and have one of the country’s leading practices in Fisheries and Aquaculture.
8. Arntzen de Besche
This firm is a major player in the Norwegian corporate market, specifically known for its strength in Energy and Infrastructure. They have a highly regarded Employment Law practice and are frequently involved in complex labor negotiations and restructuring processes for large industrial groups.
9. Selmer
Selmer is recognized for its unique blend of legal and financial expertise, often employing financial analysts alongside its lawyers. This makes them a favorite for Real Estate, Transactional Tax, and Private Equity. They are often praised for their pragmatic, business-oriented approach to deal-making.
10. DLA Piper Norway
As one of the few truly global firms with a full-service presence in Oslo, DLA Piper Norway offers unrivaled international connectivity. They excel in Cross-border M&A and Regulatory Compliance, making them the ideal partner for multinational corporations operating in the Norwegian market.
The “Big Four” and The Challengers
Traditionally, Thommessen, Schjødt, Wiersholm, and BAHR are considered the “Big Four” of Norway. However, the gap is closing as firms like Haavind and Wikborg Rein lead in specialized sectors like offshore wind and international maritime.
| Sector | Top-Tier Specialists |
| Energy (Oil & Renewables) | BAHR, Thommessen, Haavind |
| Shipping & Maritime | Wikborg Rein, Thommessen, Simonsen Vogt Wiig |
| Corporate / M&A | Schjødt, Wiersholm, Thommessen |
| Tax Law | Wiersholm, BAHR, Thommessen |
Key Market Trends in 2026
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Aquaculture Boom: With Norway leading the world in salmon farming, legal work in Fishing and Aquaculture has become a Tier 1 practice for firms like Haavind and Simonsen Vogt Wiig.
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Green Energy Transition: The shift from traditional oil and gas to offshore wind and hydrogen has led to a surge in Energy Law mandates.
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Nordic Integration: Many firms, led by Schjødt, are expanding their footprint across Sweden and Denmark to provide a unified “Nordic” legal service.
What title would you like for this blog? (e.g., Navigating the North: Norway’s Top 10 Law Firms for 2026 or The Elite 10: Leading Legal Practices in Norway)
