Johan Jacob Ahrenberg, usually referred to as Jac was a Finnish architect, writer and artist. He designed a number of public buildings in Finland and is also remembered for his literary work which mainly deals with themes from contemporary everyday life in eastern Finland.
- Occupation
- architect, art critic, painter, writer
- Citizenship
- Grand Duchy of Finland, Russian Empire
- Born
- April 30, 1847
- Died
- October 10, 1914
