| Official Name: | Stjärnsund |
| Pushpin Map: | Sweden Dalarna#Sweden |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Hedemora Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Dalarna County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Dalarna |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.51 |
| Population As Of: | 31 December 2010 |
| Population Total: | 161 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 60.4322°N 16.2125°W |
Stjärnsund (in Swedish pronounced as /ɧæɳˈʂɵnːd/)[2] is a village in Hedemora Municipality, Dalarna County, Sweden, with 161 inhabitants in 2010.
The name is derived from the Swedish words "stjärna" (star) and "sund" (strait).