| San Ignacio Municipality | |
| Native Name: | Municipio de San Ignacio |
| Pushpin Label Position: | above |
| Pushpin Map Caption: | Location in Mexico |
| Subdivision Type: | Country |
| Subdivision Name: |  Mexico |
| Subdivision Type1: | State |
| Subdivision Name1: | Sinaloa |
| Subdivision Type2: | Seat |
| Subdivision Name2: | San Ignacio |
| Subdivision Type3: | No. of Sindicaturas |
| Subdivision Name3: | 8 |
| Leader Title: | Municipal president |
| Leader Name: | Dr. Jesús Alfonso Lafarga Zazueta |
| Established Title: | Foundation |
| Established Date: | 1915 |
| Area Total Km2: | 4650.97 |
| Population As Of: | 2010 |
| Population Total: | 22,527[1] |
| Timezone: | Mountain Standard Time |
| Utc Offset: | -7 |
| Coordinates: | 23.9367°N -105.4275°W |
| Website: | Official website |
Municipality of San Ignacio is a municipality in the Mexican state of Sinaloa in northwestern Mexico.[2]
It stands at 23.9367°N -106.4275°W.
San Ignacio Municipality is subdivided in 8 sindicaturas: