| Háj u Duchcova | |
| Settlement Type: | Municipality |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Ústí nad Labem |
| Subdivision Type2: | District |
| Subdivision Name2: | Teplice |
| Pushpin Map: | Czech Republic |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location in the Czech Republic |
| Coordinates: | 50.6308°N 13.7128°W |
| Established Title: | First mentioned |
| Established Date: | 1203 |
| Area Total Km2: | 7.51 |
| Elevation M: | 281 |
| Population As Of: | 2024-01-01 |
| Population Footnotes: | [1] |
| Population Total: | 1336 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 417 22 |
Háj u Duchcova (German: Haan) is a municipality and village in Teplice District in the Ústí nad Labem Region of the Czech Republic. It has about 1,300 inhabitants.
Háj u Duchcova lies approximately 8km (05miles) west of Teplice, 24km (15miles) west of Ústí nad Labem, and 79km (49miles) north-west of Prague.
The village of Domaslavice is an administrative part of Háj u Duchcova.