About Thommessen
Thommessen is one of Norway’s leading commercial law firms, with offices in Oslo, Bergen, Stavanger and London. Since our foundation in 1856, we have been closely involved in most of the defining developments in Norwegian business. Our clients are Norwegian and international businesses, in both the private and public sector. We assist businesses that recognize the value of a full-service, modern law firm with the experience, capacity, and culture required to handle complex matters with confidence, efficiency, and the highest quality.
For nearly 170 years, we have played a role in shaping Norway. With a long history and strong reputation, our focus remains firmly on the future. Together with our clients, we will continue to contribute to a stronger and more sustainable business community.
Lawyers & Associates
Our Partners and Associates have robust legal expertise combined with in-depth industry knowledge.
Staff members
Year of establishment
Since the establishment in 1856, Thommessen have been closely involved in most of the defining developments in Norwegian business.
At Thommessen, we enable our clients to achieve their objectives by understanding their challenges and opportunities.
Sverre Tyrhaug
Managing Partner
Turnover in 2024 (+18% vs. 2023)
We are recognized for having leading expertise in all areas, we preserve the core and stimulate change, we engage the entire team and put the client at the center of everything we do.
Four offices
In Oslo, we have offered legal services to private and public companies for more than 160 years.
For more than ninety years, our Bergen office has offered its expertise to clients and businesses in Western Norway – and in the rest of the country.
In 2020, Thommessen established a leading presence also in Stavanger.
Our London office has served as an important international market gateway for more than three decades.