| Southern Sermilik | |
|---|---|
| Søndre Sermilik (Danish) | |
 Upper part of Southern Sermilik in 2018 | |
  Southern Sermilik Location in Greenland | |
| Location | Arctic |
| Coordinates | 60°34′N 44°47′W / 60.567°N 44.783°W |
| Ocean/sea sources | Labrador Sea |
| Basin countries | Greenland |
| Max. length | 80 km (50 mi) |
| Max. width | 4.3 km (2.7 mi) |
Southern Sermilik (Danish: Søndre Sermilik) is a fjord in southwestern Greenland. Administratively it is part of the Kujalleq municipality.