| Xiushan | |
| Other Name: | Siushan |
| Settlement Type: | Autonomous County |
| Image Map1: | Xiushan.svg |
| Map Caption1: | Location of Xiushan County in Chongqing |
| Mapsize1: | 250px |
| Coordinates: | 28.5081°N 108.992°W |
| Subdivision Type: | Country |
| Subdivision Name: | China |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Chongqing |
| Seat Type: | County seat |
| Seat: | Zhonghe Subdistrict |
| Area Total Km2: | 2450 |
| Population As Of: | 2020 census |
| Population Density Km2: | auto |
| Population Total: | 496194 |
| Population Footnotes: | [1] |
| Timezone: | China Standard |
| Utc Offset: | +8 |
Xiushan Tujia and Miao Autonomous County, or Xiushan County for short, is located in the southeast of Chongqing Municipality, China. It is the municipality's southernmost county-level division.
The county administers 4 subdistricts, 17 towns, and 6 townships.