Osvaldo Costa de Lacerda (March 23, 1927 – July 18, 2011) was a brazilian composer. He began piano study at nine, and from 1952 to 1962 he studied composition with Camargo Guarnieri, under whose orientation his compositional character developed and to whom he owed the beginning of his career. His aesthetic credo is that of a refined nationalism, resulting from his extensive knowledge of the characteristics of Brazilian music, combined with solid training in modern techniques of composition.