Buenos Aires, the capital of Argentina has a population of around 3 million, (metropolitan area of 13 million) and there is a 12,000 strong Greek community. Emigration from Greece to Buenos Aires peaked between WWI and WWII. Today, the Greek community of Buenos Aires is the largest and wealthiest of its type in Latin America. Many are successful businessmen, ship owners, scholars and writers.

Buenos Aires’ most famous Greek immigrant is Aristotle Onassis, a refugee from Smyrna, who arrived in Buenos Aires on September 21st, 1923. Onassis was involved with tobacco manufacturing, before buying his first merchant ship in the early 1930s. In 1932, Onassis was appointed Honorary Deputy Consul of Greece to Buenos Aires. He later became one of the world's wealthiest men.