| Official Name: | Pellegrini |
| Pushpin Map: | Argentina Buenos Aires Province#Argentina |
| Pushpin Map Caption: | Location in Buenos Aires Province |
| Pushpin Mapsize: | 200 |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Buenos Aires |
| Subdivision Type2: | Partido |
| Subdivision Name2: | Pellegrini |
| Population Total: | 5,031 |
| Population Density Km2: | auto |
| Coordinates: | -36.2667°N -71°W |
| Elevation M: | 105 |
| Postal Code Type: | CPA Base |
| Postal Code: | B 6349 |
| Area Code: | +54 2392 |
Pellegrini is a town on the western border of Buenos Aires Province, Argentina. It is the head town of the Pellegrini Partido.
The town is named in honour of Carlos Pellegrini (1846-1906), who served as Governor of Buenos Aires, and as President of Argentina.
The local economy is dominated by agriculture and farming, the main products of the region are cereals, vegetable oils, beef, dairy products, pork, deer and honey. Other industries include construction and services.
Instituto Nacional de Tecnología Agropecuaria has a campus in Pellegrini.