Castrén & Snellman

Castrén & Snellman helps clients succeed in a world defined by accelerating change and increasing regulatory complexity. We are recognised as the forerunners of demanding legal services in mergers and acquisitions, dispute resolution, and across the full scope of business law.

Our firm stands out for its direct, pragmatic way of working and true cross-team collaboration, built on a culture known as the Castrén spirit. When challenges arise, our internationally recognised experts provide clear strategic thinking and innovative legal solutions for the most complex multi-jurisdictional assignments, across industries and markets.

With more than 135 years of advising clients, we have grown into one of the largest and fastest-growing law firms in Finland and the Nordic legal market. Today, our team includes nearly 300 professionals, including 180 lawyers working across 31 specialised fields of business law. The firm is owned by its working attorneys, ensuring long-term commitment, accountability, and close collaboration in client engagements.

More than half of our work is cross border. We regularly support international corporations, financial institutions, investors, and market-shaping businesses across Europe, the Nordics, and globally, supported by long-standing relationships with top-tier law firms around the world.

Our most recent recognitions include Law Firm of the Year Finland (Lexology Index Awards 2024) and Scandinavian Firm of the Year (Women in Business Law Awards EMEA 2025).