Elias David Häusser (25 June 1687 – 16 March 1745) was a German-Danish architect working in the Baroque and Rococo styles.
He spent some time at the court of the Duke of Saxony-Gotha and was educated as a military building master in Saxony-Poland.
In the capacity of an officer in the engineering troops, he was in charge of several projects in Copenhagen, including the Central Guard on Kongens Nytorv and the Commander's House and prison at Kastellet.
[2] In the early 1730s, King Christian VI commissioned him as master builder of a new grand castle, Christiansborg Palace, on the site of the old Copenhagen Castle, which had been torn down in 1731.
He left the project in 1742, a few years before it was completed, to assume a position as Commander in Nyborg on the Danish island of Funen.