| Province: | SK |
| Type: | Hwy |
| Route: | 343 |
| Photo Width: | 250 |
| Length Km: | 33.8 |
| Length Round: | 1 |
| Direction A: | West |
| Terminus A: | at Simmie |
| Direction B: | East |
| Terminus B: | near Blumenort |
| Rural Municipalities: | Bone Creek, Lac Pelletier |
| Previous Type: | Hwy |
| Previous Route: | 342 |
| Next Type: | Hwy |
| Next Route: | 349 |
Highway 343 is a provincial highway in the Canadian province of Saskatchewan. It runs from Highway 4 near Blumenort to Simmie near Highway 631. It is about long.
The highway provides access to Lac Pelletier Regional Park and connects to Highway 630.