Hans Wilhelm Auer (26 April 1847[1] – 30 August 1906[1]) was a Swiss-Austrian architect best known for his design of the Swiss Bundeshaus (1894–1902) in Bern.
A pupil first of Gottfried Semper at the ETH Zurich and then staff assistant for Theophil Hansen in Vienna, Auer established his own office in 1887 and enjoyed a rich and varied career as a practicing architect, educator, and theorist.
Like his near-contemporary Constantin Lipsius, Auer was an eloquent advocate for architectural realism, a sophisticated theoretical stance that became increasingly significant in the 1880s on the continent.
Auer's brilliant historical discussion of the triglyph (1880) comprised the basis for his own reflections on improving the existing state of contemporary architecture.
Architectural realism enabled Auer's generation to disengage from slavish imitation of historical forms and hastened the emergence of more subtle perspectives on stylistic innovation.