Göran Albert Casimir "Casse" Ehrnrooth, titled Vuorineuvos (April 6, 1931 – July 8, 2015), was a Finnish magnate and former chairman of the Nokia Corporation. His business career began in the forest industry, and later he was a director of UPM-Kymmene and Merita-Nordbanken.
The eldest son of the President of Nordic Union Bank, one of the then two biggest banks in Finland, Ehrnrooth inherited substantial holdings in important companies from both his paternal and maternal families. His paternal family were in banking, while his maternal forefathers were founders of Fiskars and Kaukas industries. His earlier family tree includes notable military men. He had a degree in law from Helsinki University.
Casimir Ehrnrooth succeeded his maternal relatives as President and CEO of Kaukas paper factory, in small town of Lauritsala (annexed to Lappeenranta in 1967), Southern Karelia in 1962; and he served there for long.
Casimir Ehrnroth was successor of Jacob von Julin (1906–1987) as CEO of Kaukas paper factory. He was Jacob von Julin’s sisters son. Casimir Ehrnrooth was selected in the Kaukas Board of Directors in 1954 and as CEO in 1967.
In 1985, he arranged the merger between Kymi-Strömberg industrial corporation and his Kaukas, becoming President and Chairman of the new conglomerate, Kymmene Corporation, in which position he served until retirement. As such, Casimir Ehrnrooth was in late 1980s and early 1990s the top businessman and decision-maker of Finnish forest industry, a branch most important to overall Finnish economy. His influence was felt in several governmental policies of Finland, such as some devaluations of currency.
As side occupation, he also served in the council of Union Bank, and as chairman of Nokia Corporation (1992–1999), a company which just in those years rose to position of a worldwide developer of telecommunications devices.