| Tailai County | |
| Other Name: | T'ai-lai |
| Settlement Type: | County |
| Image Map1: | Location of Qiqihar Prefecture within Heilongjiang (China).png |
| Map Caption1: | Qiqihar in Heilongjiang |
| Coordinates: | 46.394°N 123.417°W |
| Subdivision Type: | Country |
| Subdivision Name: | People's Republic of China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Heilongjiang |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Qiqihar |
| Area Total Km2: | 4,061 |
| Population Total: | 302,027 |
| Population As Of: | 2010 |
| Population Density Km2: | auto |
| Timezone1: | China Standard |
| Utc Offset1: | +8 |
Tailai County is a county in the west of Heilongjiang province, People's Republic of China, bordering Inner Mongolia to the west and Jilin province to the south. It is the southernmost county-level division of the prefecture-level city of Qiqihar.
Tailai County is divided into 7 towns, 1 ethnic town and 2 ethnic townships.[1]
The population of the district was in 1999.[2]