| Wau County | |
| Settlement Type: | County |
| Seat: | Wau |
| Named For: | Wau (capital city) |
| Population Total: | 232,910 |
| Area Total Km2: | 19,251.27 |
| Subdivision Type1: | Country |
| Subdivision Type2: | Region |
| Subdivision Name2: | Bahr el Ghazal |
| Subdivision Type3: | State |
| Subdivision Name3: | Western Bahr el Ghazal |
| Timezone: | CAT |
| Utc Offset: | +2 |
Wau County is a county in Western Bahr el Ghazal state, in the Bahr el Ghazal region of South Sudan. Wau County was home to the state's capital, Wau. It is the most populous county in the state with over 232,910 people.
The seat of Wau County is the third most populous city in South Sudan.
Wau County is both the second largest and second smallest county in area of Western Bahr el Ghazal. It is surrounded by Raga County, Jur River County, Aweil Centre County (county of Northern Bahr el Ghazal), Nagero County and Tombura County (both counties of Western Equatoria).
Wau County is in the Northwest region of South Sudan, and is in the middle of Western Bahr el Ghazal.
As of 2013, ethnic groups reported in Wau County were Balanda, Azande, Bongo, Gollo, Ndogo, and Bai. Balanda made up the large ethnic group.[1]