Established in 1899, Dittmar & Indrenius is one of the very oldest law firms in Finland. The firm has seen Finland's last years as an imperial Russian Grand Duchy and the development of the Republic of Finland, independent since 1917, through two world wars to become the present-day globalised economy and member state of the European Union.

The name Dittmar & Indrenius refers to two of its founding partners, John Dittmar (1865 - 1925) and Emanuel Indrenius (1866 - 1932).

From the outset Dittmar & Indrenius was closely connected to the industry and the banking and finance sector. John Dittmar represented many of the leading industrial companies and financial institutions of the day, but also private clients like Carl Gustaf Mannerheim, General and later Marshal and President of Finland.

After the Second World War Dittmar & Indrenius established itself as one of the leading Helsinki law firms capable of serving international companies setting up or acquiring businesses in Finland.

Consequently, the firm was often involved in cases that were the first of their kind in Finland, e.g., establishing a foreign-owned commercial bank in this country and advising in the first cross-border bank merger in the Nordic countries.

During the past two decades Dittmar & Indrenius has witnessed a dramatic increase in transactional and litigation work and steadily grown in size, while holding true to the firm's core values: emphasis on quality, and long-standing client relationships.