|4th Secretary General of the Organization of American States|
|Preceded by||José A. Mora|
|Succeeded by||Alejandro Orfila|
|President of Ecuador|
September 1, 1948 – August 31, 1952
|Preceded by||Carlos Julio Arosemena|
|Succeeded by||José María Velasco|
|Born||February 17, 1906
New York City, New York
|Died||January 22, 1987
|Alma mater||University of Maryland
University of California, Berkeley
Edmund A. Walsh School of Foreign Service at Georgetown University
Galo Plaza Lasso (February 17, 1906 – January 28, 1987) was an Ecuadorian politician and statesman who served as President of Ecuador from 1948 to 1952 and Secretary General of the Organization of American States from 1968 to 1975. He is the son of former Ecuadorian President Leonidas Plaza.
Plaza was born on February 17, 1906 in New York City, New York. He studied at University of Maryland, at the University of California, Berkeley, and at the Edmund A. Walsh School of Foreign Service at Georgetown University. Plaza was married to Rosario Pallares. They had six children. Plaza died on January 28, 1987 from a heart attack in Quito, Ecuador, aged 80.