| Official Name: | San Antonio (Fray Mamerto Esquiú) |
| Settlement Type: | Municipality |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: | Argentina |
| Subdivision Name1: | Catamarca Province |
| Subdivision Type2: | Department |
| Subdivision Name2: | Greater San Fernando del Valle de Catamarca |
| Unit Pref: | Imperial |
| Timezone: | ART |
| Utc Offset: | -3 |
San Antonio (Fray Mamerto Esquiú) is a municipality in Catamarca Province in northwestern Argentina.[1] It is located within the Greater San Fernando del Valle de Catamarca area.