| Hạ Lang district | |
| Settlement Type: | District |
| Native Name: | Huyện Hạ Lang |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Northeast |
| Subdivision Type2: | Province |
| Subdivision Name2: | Cao Bằng |
| Seat Type: | Capital |
| Seat: | Thanh Nhật |
| Unit Pref: | Imperial |
| Area Total Km2: | 463 |
| Population As Of: | 2003 |
| Population Total: | 26,330 |
| Timezone: | Indochina Time |
| Utc Offset: | +7 |
Hạ Lang is a rural district of Cao Bằng province in the Northeast region of Vietnam. As of 2003 the district had a population of 26,330.[1] The district covers an area of 463 km². The district capital lies at Thanh Nhật.[1]