Comuna 9
{{Infobox settlement
|official_name = Comuna 9
|settlement_type = Commune
|image_skyline =
|image_map = Buenos_Aires_Comunas.svg
|image_alt =
|image_caption =
|pushpin_map = Argentina Buenos Aires
|pushpin_label_position =left
|pushpin_map_caption =
|coordinates = {{coord|34|39|00|S|58|29|00|W|display=inline}}
|subdivision_type = Country
|subdivision_name = {{flag|Argentina}}
|subdivision_type1 = Province
|subdivision_name1 = {{flag|Buenos Aires}}
|population_as_of = 2010
|population_total = 161,797
|area_total_km2 = 16.8
|area_land_km2 =
| area_land_sq_mi =
| area_metro_km2 =
| area_metro_sq_mi =
|elevation_m =
|elevation_ft =
|postal_code =
|area_code =
|timezone =ART
|utc_offset =-3
|utc_offset_DST =-2
|blank_name = Climate
|blank_info = BSh
}}
Comuna 9 is one of the 15 communes in which the Autonomous City of Buenos Aires is divided. It is made up of the neighborhoods of Liniers, Mataderos and Parque Avellaneda. It is located in the southwest of the city, has an area of 16.8 km²{{cite web|url=http://www.estadistica.buenosaires.gov.ar/areas/hacienda/sis_estadistico/anuario_general/archivos/1_131.html|title=Población total estimada por sexo, superficie y densidad poblacional según comuna. Ciudad de Buenos Aires. 1° de julio de 2009.|accessdate=2 May 2012|author=GCBA|archiveurl=https://web.archive.org/web/20110913084355/http://www.estadistica.buenosaires.gov.ar/areas/hacienda/sis_estadistico/anuario_general/archivos/1_131.html|archivedate=13 September 2011}} and a total population of 161,797 according to the 2010 census.