| Youxi County | |
| Other Name: | Yuki |
| Postal Code Type: | Postal code |
| Settlement Type: | County |
| Image Map1: | ChinaFujianSanming.png |
| Map Caption1: | Sanming in Fujian |
| Subdivision Type: | Country |
| Subdivision Name: | People's Republic of China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Fujian |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Sanming |
| Area Total Km2: | 3,425 |
| Population Total: | 352067 |
| Population Density Km2: | auto |
| Coordinates: | 26.17°N 118.19°W |
| Timezone: | China Standard |
| Utc Offset: | +8 |
Youxi is a county of central Fujian province, People's Republic of China. It is under the administration of Sanming City.
Towns:[1]
Townships: