Heinz Tesar (born June 16, 1939 in Innsbruck) is an Austrian architect who has an international reputation for his church and museum architecture.
Tesar studied architecture from 1961 to 1965 at the Akademie der bildenden Künste in the master class of Roland Rainer. After several stays in Hamburg (1959–1961), Munich (1965–1968) and Amsterdam (1971), he opened in 1973, his own studio in Vienna. From 1972 to 1977 he was a member of the Board of the Austrian Society for Architecture and from 2002 to 2006 he was a member of Baukollegiums of the city of Zurich. In 2000 he opened an office in Berlin.
Since the 1980s, he has taught at various universities in Europe and America:
- 1983 Visiting Professor at Cornell University in Ithaca, New York
- 1985–1987 Visiting Professor at the ETH Zurich
- 1988 Visiting Professor at Syracuse University, New York
- 1990 Visiting Professor Graduate School of Design, Harvard university, Cambridge, Massachusetts
- 1990–1991 Visiting Professor at the Technical University of Munich
- 1992 Cass Gilbert Visiting Professor, University of Minnesota, Minneapolis
- 1995 International Summer Academy in Salzburg
- 1996–2000 Visiting Professor Istituto Universitario di Architettura di Venezia
- 1997–1998 Visiting Professor University of Fine Arts Hamburg
- 2000–2006 Visiting Professor Accademia di Architettura, University of Italian Switzerland, Mendrisio
For various international competition entries he has received the first or second prize: e.g. for Klösterliareal in Bern (1981), the University Library in Amiens (1991), the Synagogue in Dresden (1997), the Museum for Art and Design in Ingolstadt (2000) and the Museum of Medicine in Padua, Italy (2004).
- 1974–77 Music Studio, Steinach am Brenner
- 1976–78 Unternberg Parish church.
- 1977–86 Church and Cemetery, Wagrain
- 1976–83, 1985–88 Residential Development, Vienna,
- 1981–83 Firestation Perchtoldsdorf.
- 1981–83 Haus Grass Bregenz.
- 1981–85 Biberhaufenweg settlement, Vienna, (with Carl Pruscha and Otto Häuselmayer)
- 1985–87 House Grobecker, Vienna,
- 1986–87 Administration building Schömer, Klosterneuburg,
- 1987–90 Day-care, residential complex Wienerberggründe, Vienna.
- 1991 Design Koloman Walisch Square, Kapfenberg.
- 1993–95 Keltenmuseum in Hallein
- 1994 Stadttheater / cinema and museum, Hallein, (the conversion of Wunibald Deininger building which was erected in 1925 – Deininger was a student of Otto Wagner)
- 1995 Evangelical Church, Klosterneuburg. 
- 1995 Warehouse area, St. Gallen Styria,
- 1995 ″Taschenberg Residence″ (Haus am Zwinger next to Taschenberg Palace), Dresden
- 1998–99 Essl Collection Museum Klosterneuburg
- 1999 Donau City Church of Christ, hope of the world in the Danube City Vienna.
- 1999 Haus am Zwinger, Dresden
- 2000–05 Conversion Bode Museum Kaiser Friedrich Museum, Berlin,
- 2001–06 Teichgartencalvario, Klosterneuburg near Vienna,
- 2001–06 BTV City Forum, Innsbruck,
- 2007–08 Auditorium IST Austria, Klosterneuburg
- 2013 Conversion of Kahlsperg Castle for the Franciscan Sisters of Hallein 
Donau City Church, Vienna
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