H.E. Colon Eloy Alfaro (1891-1957) was Ambassador of Ecuador to the United States of America between 1936 and 1944. He was a member of the Order of the Crown of Thorns.

He was the son of Eloy Alfaro, President of Ecuador, and after studies in his native land proceeded successively to the U.S. Military Academy, German Cavalry School and George Washington University. He was consul general to the Canal Zone, Panama, Mexico, Nicaragua, Guatemala, Honduras, El Salvador, Costa Rica, Colombia, the Dominican Republic and the United States. He additionally served his country on many diplomatic missions. From 1947, he was a member of the Board of Governors of the Pan-American Union, Washington, DC. In 1950 he received an honorary doctorate from the University of Florida.