Clorindo Testa, Italian-Argentinian architect, designed the National Library of the Argentine Republic and Marriott Plaza Hotel (d. 2013)
Clorindo Manuel José Testa (December 10, 1923 – April 11, 2013) was an Italian-Argentine architect and artist.

Testa was one of the leaders of the Argentine rationalist movement and one of the pioneers of the brutalist movement in Argentina. His style as an architect has always been influenced by his artistic nature, with projects dominated by the effects of colour, tension, metaphors and plasticity; these aspects are well illustrated in his designs for the Biblioteca Nacional de la República Argentina and the Banco de Londres building in Buenos Aires. He was member of the international jury which chose Carlos Ott as the architect for the Opera Bastille in Paris.

Testa won the Konex Award, the most prestigious award for visual arts in Argentina, in 1982, 1992 and 2012. He died, aged 89, in Buenos Aires, Argentina.