| South Fly District | |
| Pushpin Map: | Papua New Guinea |
| Coordinates: | -8.6833°N 156°W |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location within Papua New Guinea |
| Subdivision Type: | Country |
| Subdivision Name: | Papua New Guinea |
| Subdivision Type1: | Province |
| Subdivision Name1: | Western Province |
| Seat Type: | Capital |
| Seat: | Daru |
| Area Total Km2: | 31864 |
| Population Total: | 59152 |
| Population As Of: | 2011 census |
| Population Density Km2: | auto |
| Demographics1 Title1: | Main languages |
| Timezone1: | AEST |
| Utc Offset1: | +10 |
South Fly District is a district of the Western Province of Papua New Guinea. Its capital is Daru. The area of the district is 31,864 km²,[1] with a population of 46,407 at the 2000 census.[2]
The district is administratively subdivided into four Local Level Government Areas: