| Official Name: | San Ignacio San Ignacio de Piaxtla |
| Pushpin Map: | Mexico Sinaloa#Mexico |
| Pushpin Map Caption: | Location in Mexico |
| Subdivision Type: | Country |
| Subdivision Name: |  Mexico |
| Subdivision Type1: | State |
| Subdivision Name1: | Sinaloa |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | San Ignacio |
| Leader Title: | Municipal president |
| Leader Name: | Dr. Jesús Alfonso Lafarga Zazueta |
| Established Title: | Founded in |
| Established Date: | 1633 |
| Established Title2: | Founded by |
| Unit Pref: | Metric |
| Population As Of: | 2010 |
| Population Total: | 4,543 |
| Timezone: | Mountain Standard Time |
| Utc Offset: | -7 |
| Coordinates: | 23.9367°N -106.4275°W |
San Ignacio or San Ignacio de Piaxtla is a city and seat of the surrounding San Ignacio Municipality in the Mexican state of Sinaloa.
It stands at 23.9367°N -106.4275°W. The municipality reported 4,543 inhabitants in the 2010 census.
In this town actress Ofelia Cano was born.