| Yangyuan County | |
| Postal Code Type: | Postal code |
| Settlement Type: | County |
| Pushpin Map: | China Hebei |
| Pushpin Label: | Yangyuan |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location of the seat in Hebei |
| Subdivision Type: | Country |
| Subdivision Name: | People's Republic of China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Hebei |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Zhangjiakou |
| Population Density Km2: | auto |
| Coordinates: | 40.1167°N 124°W |
| Timezone: | China Standard |
| Utc Offset: | +8 |
| Order: | st |
| P: | Yángyuán Xiàn |
| W: | Yang-yüan Hsien |
| L: | Yang Plain County |
Yangyuan County is a county in Zhangjiakou Prefecture, Hebei Province, China.
Yangyuan is bounded by Huai'an County to the north, Xuanhua County to the east, Yu County to the south, and by Datong municipality in Shanxi Province to the north and west.
Under the Han, Yangyuan County was part of Dai Commandery.
Yangyuan runs 5 towns (zhen, 镇) and 9 townships (xiang, 乡). The county executive, legislature and judiciary are in Xicheng Town, together with the CPC and PSB branches.