| Official Name: | Chay Sudan |
| Native Name: | چاي سودان |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Khuzestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Ramshir |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Abdoliyeh-ye Sharqi |
| Population As Of: | 2006 |
| Population Total: | 70 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 31.0522°N 49.2992°W |
Chay Sudan (Persian: چاي سودان, also Romanized as Chāy Sūdān; also known as Chāh Sūdān, Chūl, ‘Omūr, and Sūdān Chāy) is a village in Abdoliyeh-ye Sharqi Rural District, in the Central District of Ramshir County, Khuzestan Province, Iran. At the 2006 census, its population was 70, in 13 families.