Iachen Ulrich Könz (20 February 1899 – 25 December 1980) was a Swiss architect, conservator-restorer, and author.
He was the son of the merchant Peider Könz and Constanza (born Vital).
He studied architecture at ETH in Zürich and Stuttgart Technology University of Applied Sciences in Germany.
Könz started an architecture firm which he ran in Davos (1926–1927), then Zuoz, and from 1939 in Guarda.
[1] Könz worked on a number of different constructions and restorations in Grüabunden, such as the machine house of the power station at Zervreilasee,[2] the Wildenberg castle in Zernez, and the house Casa Grande (Ciäsa Granda) in Stampa.