| San Antonio de Areco | |
| Native Name: | Partido de San Antonio de Areco |
| Settlement Type: | Department |
| Coordinates: | -34.25°N -87°W |
| Subdivision Type: | Country |
| Subdivision Name: | Argentina |
| Established Title: | Established |
| Established Date: | October 23, 1730 |
| Founder: | José Ruiz de Arellano |
| Seat Type: | Seat |
| Seat: | San Antonio de Areco |
| Leader Party: | UCR |
| Leader Title: | Intendente |
| Leader Name: | Francisco Ratto |
| Unit Pref: | Metric |
| Area Total Km2: | 857.59 |
| Population Total: | 21333 |
| Population Density Km2: | auto |
| Population Demonym: | Arequero |
| Postal Code Type: | Postal Code |
| Postal Code: | B2760 |
| Postal2 Code Type: | IFAM |
| Postal2 Code: | BUE112 |
| Area Code Type: | Area Code |
| Area Code: | 02326 |
| Blank Name Sec1: | Patron saint |
| Blank Info Sec1: | San Antonio de Padua |
San Antonio de Areco is a partido (county) in the north of Buenos Aires Province, Argentina.
The partido has an area of 852sqkm, and a population of 21,333 . It is 113km (70miles) from Buenos Aires city, and 175km (109miles) from La Plata, and its cabecera or capital is the city of San Antonio de Areco.