Silja Tillner (born 1960) is an Austrian architect. She is a Principal in the firm Architekten Tillner & Willinger ZT GmbH.
She received a Fulbright Grant to study Architecture at UCLA. Her UCLA master's thesis project was "The End of the Glendale Freeway Urban Design", Los Angeles, California, combining transit with community services.[1] Her notable projects include Gürtel-Urbion (revitalization of Gürtel Boulevard, Retractable Cover of Vienna City Hall, and Spittelau Office Building.[2]
The architect's office is focussing on "Urban Study and -Design, Land- and Site Use Concepts, Public Space Design, Membrane Constructions, Office Buildings, Urban Utitlity Buildings and Residential Buildings". The concept of their website is bilingual: English and German language. The office was originally founded 1995 by Silja Tillner. The cooperation with Dipl.-Ing. Alfred Willinger dates from 2003 and the shared enterprise Tillner & Partner ZT GmbH was established in 2005.[3]