Francisco Caetano Keil Coelho do Amaral, 2nd Viscount of Pedralva, was a Portuguese architect, painter and photographer. His name was given to a street in Lisbon.
Keil do Amaral stood out in a particular way throughout the 1940s and 1950s, having acted in an original way during these particularly difficult decades of national life. He assumed the project responsibility of important public works, without identifying himself with the political regime or with the historicist standards of the official taste of the Estado Novo and, at the same time, maintaining a critical distance in relation to the International Style orthodoxy, in search of a "third way" able to reconcile modern rationality with thoughtful consideration of the lessons of traditional architecture.