Giuseppe Terragni (°Meda, 18 April 1904 – 19 July 1943) was an Italian architect.
He worked primarily under the fascist regime of Benito Mussolini and pioneered the Italian modern movement under the rubric of Rationalism. His most famous work is the Casa del Fascio built in Como, northern Italy, which was begun in 1932 and completed in 1936; it was built in accordance with the International Style of architecture and frescoed by abstract artist Mario Radice. He attended the Technical College in Como then studied architecture at the Politecnico di Milano university. In 1927 he and his brother Attilio opened an office in Como. They remained in practice until Giuseppe’s death during the war.
A pioneer of the modern movement in Italy, Terragni produced some of its most significant buildings. A founding member of the fascist Gruppo 7 and a leading Italian Rationalist, Terragni fought to move architecture away from neo-classical and neo-baroque revivalism. In 1926 he and other progressive members of Gruppo 7 issued the manifesto that made them the leaders in the fight against revivalism.
In a career that lasted only 13 years, Terragni created a small but remarkable group of designs; most of them were built in Como, which was one of the centers of the Modern Movement in Italy.
In his last designs, Terragni achieved a more distinctive Mediterranean character through the fusion of modern theory and tradition. Terragni died of thrombosis in Como in 1943.