South Frontenac
| South Frontenac | |
|---|---|
| Township of South Frontenac | |
| County Road 5 between Harrowsmith and Sydenham | |
| Coordinates: 44°30′29″N 76°29′38″W / 44.5081°N 76.4939°W | |
| Country | Canada | 
| Province | Ontario | 
| County | Frontenac | 
| Incorporated | 1998 | 
| Government | |
| • Type | Township | 
| • Mayor | Ron Vandewal | 
| • Councillors | List | 
| • Fed. riding | Lanark—Frontenac | 
| • Prov. riding | Lanark—Frontenac—Kingston | 
| Area | |
| • Land | 948.05 km2 (366.04 sq mi) | 
| Population  (2021) | |
|  • Total | 20,188 | 
| • Density | 21.3/km2 (55/sq mi) | 
| Time zone | UTC-5 (EST) | 
| • Summer (DST) | UTC-4 (EDT) | 
| Postal Code | K0H | 
| Area code(s) | 613, 343 | 
| Website | www | 
South Frontenac is a township in Frontenac County in eastern Ontario, Canada. It was formed on January 1, 1998, through the amalgamation of the Townships of Bedford, Loughborough, Portland, and Storrington.
The Holleford crater is located in the township near the community of Holleford.