Alberto Evaristo Ginastera (April 11, 1916 Buenos Aires - June 25, 1983 Geneva) was an Argentinian composer of classical music. He is considered one of the most important Latin American classical composers.

He studied at the conservatory in Buenos Aires, graduating in 1938. After a visit to the United States of America in 1945–47, where he studied with Aaron Copland at Tanglewood, he returned to Buenos Aires and co-founded the League of Composers. He held a number of teaching posts. He moved back to the USA in 1968 and from 1970 lived in Europe. He died in Geneva.