Roland Rainer (1 May 1910 – 10 April 2004) was an Austrian architect.
Born in Klagenfurt, Roland Rainer decided to become an architect when he was 18, so he studied at the Vienna University of Technology. His thesis was about the Karlsplatz in Vienna. Then, he left Austria visiting the Netherlands and the German Academy for Urban Design in Berlin. He became a Member of the ruling Nazi Party and endorsed their policies in his theoretical works. After World War II, he returned to Austria and continued writing, including his most famous work Urban design prose.
He was then called to several universities: the Technical University of Berlin, the Technical University at Brunswick, Technion - Israel Institute of Technology, and the Technical University of Munich. In 1953, Rainer became professor for housing, urban design, and land use planning at the University of Hanover. In 1954, he became professor for structural engineering at the Graz University of Technology, which forced him to commute between Graz and Hanover. From 1954, Rainer led the Master School for Architecture at the Academy of Fine Arts Vienna.