Lomas de Zamora is a city in the province of Buenos Aires, Argentina, located south of the City of Buenos Aires and within the metropolitan area of Greater Buenos Aires. It is the capital of Lomas de Zamora Partido and has a population of 111,897.

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.