Arntzen de Besche Advokatfirma AS is a Norwegian business law firm employing more than 130 lawyers.

The firm serves Norwegian and international clients within the private and public sectors.

In January 2021, the Supreme Court of Norway convicted Arntzen de Besche of negligent counseling of Polaris Media and sentenced the firm to pay damages of NOK 100 million.

The headquarters in Oslo is centrally located in Bygdøy allé 2 and has more than 90 lawyers, of whom 38 are partners and secretarial staff and management of approximately 30 employees.

[4] In recent years Arntzen de Besche has received very positive reviews in a number of rankings.