Kerttu Tamminen (10 October 1898 – 16 July 1981) was a Finnish architect.
[1] She graduated from University of Jyväskylä and was hired as a designer and architect for the reconstruction of the Kirkkopuisto.
[2] Originally, the current Kirkkopuisto was a large market square.
Historical documents indicate that in 1837, in the middle of this large market, a place was considered for the construction of a church, which was completed only in 1880 after several stages.
In 1931, Pauli E. Blomstedt and Kerttu Tamminen were invited to present proposals for the future expression of Kirkkopuisto.