Hans Wittwer (4 February 1894 – 19 March 1952) was a Swiss architect who worked in Germany and who taught architecture at the Bauhaus art school in Dessau.

[2] He began studying architecture at ETH Zurich, a technical college, in 1912 under Karl Moser and Friedrich Bluntschli, completing his course in 1916.

[3] He also worked on the Basel-based architecture magazine ABC – Beiträge zum Bauen (Contributions on Building), founded by Mart Stam, El Lissitzky and Hans Schmidt (1893–1972).

The jury felt that none of the entries entirely met the requirements and five leading architects were contracted to produce a much more conventional building than Meyer and Wittwer's constructivist concept.

[9] In Meyer and Wittwer's building theory classes, students were taught to scientifically analyse both the client's requirements and the site conditions.

[10] While working together at the Bauhaus, Wittwer and Meyer led the design and construction of the ADGB Trade Union School in Bernau bei Berlin (1928–1930).

[12] A number of other Bauhaus graduates also taught at the school, including Benita Koch-Otte, Marguerite Friedländer and Erich Consemüller.

[15] In 1933, when the Nazis came to power, Wittwer was dismissed from both the art school and his consultant role to Merseburg city council.