| South Darfur State | |
| Native Name: | ولاية جنوب دارفور |
| Other Name: | Janob Darfor |
| Settlement Type: | State |
| Mapsize: | 299px |
| Subdivision Type: | Country |
| Subdivision Name: |  Sudan |
| Subdivision Type1: | Region |
| Subdivision Name1: | Darfur |
| Subdivision Type2: | No. of counties |
| Seat Type: | Capital |
| Seat: | Nyala |
| Leader Title: | Governor |
| Leader Name: | Musa Mahdi Ishaq |
| Area Total Km2: | 127300 |
| Population As Of: | 2018 |
| Population Total: | 5353025[1] |
| Timezone: | CAT |
| Utc Offset: | +2 |
| Coordinates: | 11.5167°N 27°W |
| Blank Name Sec2: | HDI (2017) |
| Blank Info Sec2: | 0.434[2] |
South Darfur State (Arabic: ولاية جنوب دارفور Wilāyat Ǧanūb Dārfūr; Janob Darfor) is one of the wilayat or states of Sudan. It is one of the five states that compose the region of Darfur in western Sudan.
Prior to the creation of two new states in the Darfur region in January 2012, South Darfur had an area of and an estimated population of approximately 2,890,000 (2006). Nyala is the capital of the state. The State was affected by the 2010 Sahel famine.