| Jiayin | |
| Settlement Type: | County |
| Pushpin Map: | China Heilongjiang |
| Pushpin Label: | Jiayin |
| Pushpin Map Caption: | Location in Heilongjiang |
| Coordinates: | 48.7°N 136°W |
| Subdivision Type: | Country |
| Subdivision Name: | People's Republic of China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Heilongjiang |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Yichun |
| Area Total Km2: | 7,273 |
| Elevation M: | 88 |
| Elevation Ft: | 288 |
| Population Total: | 68,579 |
| Population As Of: | 2010 |
| Population Density Km2: | auto |
| Timezone1: | China Standard |
| Utc Offset1: | +8 |
Jiayin County is a county in Heilongjiang Province, China, bordering Russian oblasts of Amur and Jewish. It is under the administration of the prefecture-level city of Yichun and the county seat is Chaoyang Town (Chinese: 朝阳镇) situated on the southern (right) bank of the Amur River.
Jiayin County is divided into 4 towns and 5 townships.[1]
The population of the district was in 1999.[2]