Erik Johannes Lönnroth was a Finnish forester, professor, and rector of University of Helsinki (1950–1953). Appointed professor of forest inventory in 1928, Lönnroth played a central role in advancing forestry science in Finland and was a driving force behind the development of major university buildings, including Metsätalo and Porthania. Widely respected for his contributions to both academia and infrastructure, he was affectionately known by the nickname "Olkikatto-Erkki."
- Occupation
- professor, head teacher, botanist, forestry scientist
- Citizenship
- Finland, Grand Duchy of Finland
- Born
- August 2, 1883, 1883
- Died
- December 23, 1971
