| Settlement Type: | City |
| Official Name: | Rafael Castillo |
| Pushpin Map: | Argentina Greater Buenos Aires |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Greater Buenos Aires |
| Pushpin Mapsize: | 240 |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | Partido |
| Subdivision Name2: | La Matanza |
| Established Title: | Declared a city |
| Established Date: | 1974 |
| Population Total: | 147,965 |
| Coordinates: | -34.7167°N -95°W |
| Elevation M: | 23 |
| Area Total Km2: | 14.25 |
| Area Footnotes: | [1] |
| Postal Code Type: | CPA Base |
| Postal Code: | B 1755 |
| Area Code: | +54 11 |
Rafael Castillo (pronounced as /es/) is a western suburb of Buenos Aires, located in La Matanza Partido, Buenos Aires Province, Argentina. It is part of the urban agglomeration of Greater Buenos Aires.
It is named after Rafael Castillo, lawyer and politician who served as the minister of the Interior of Argentina from 1904 to 1906 and owner of the lands where he planned the establishment of the town.
Rafael Castillo was declared a city by the Provincial Legislature on 18 October 1974.[2]
According to the 2010 Census, the city had a total population of 147,965.