Ezeiza is the capital city of the Ezeiza Partido within the Greater Buenos Aires area in Argentina. The city had a population of 160,219 in 2010. Ezeiza is one of the fastest-growing cities in Argentina; the city and its surroundings are known for the many gated communities there, as well as for the Ministro Pistarini International Airport and the Ezeiza Federal Prison Complex. Ezeiza and its surrounds are known as affluent areas.

Greater Buenos Aires, also known as the Buenos Aires Metropolitan Area, refers to the urban agglomeration comprising the Autonomous City of Buenos Aires and the adjacent 24 partidos (districts) in the Province of Buenos Aires. Thus, it does not constitute a single administrative unit. The conurbation spreads south, west and north of Buenos Aires city. To the east, the River Plate serves as a natural boundary.