San Antonito
- County:
- Socorro County
- County Seat:
- No
- Area (mi²):
- 1.73
- State:
- New Mexico
San Antonito is a CDP located in Socorro County, New Mexico. San Antonito has a 2025 population of 11 . San Antonito is currently declining at a rate of -56% annually and its population has decreased by since the most recent census, which recorded a population of 0 in 2020.