| Chengxi | |
| Settlement Type: | District |
| Postal Code Type: | Postal code |
| Coordinates: | 36.6283°N 101.7658°W |
| Subdivision Type: | Country |
| Subdivision Name: | China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Qinghai |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Xining |
| Seat: | Xiguan Avenue Subdistrict |
| Area Total Km2: | 52.98 |
| Population Total: | 326866 |
| Population As Of: | 2020 |
| Population Density Km2: | auto |
| Timezone: | China Standard |
| Utc Offset: | +8 |
| T: | 城西區 |
| S: | 城西区 |
| P: | Chéngxī Qū |
| L: | "city west district" |
| Order: | st |
Chengxi District is one of four districts of the prefecture-level city of Xining, the capital of Qinghai Province, Northwest China.
It covers the western part of Xining's built-up conurbation. It has over 200 000 residents (2004). Ethnically, most are Han; there are also Hui, Tibetan, Tujia, etc. - 26 in all.
Chengxi District is divided into 7 subdistricts and 1 town:
District executive, legislature and judiciary are in the Xiguan Avenue Subdistrict, together with the CPC and PSB branches. (Executive or People's Government is addressed : May Fourth Avenue, 810001).