| Nam Sách | |
| Settlement Type: | Township (Class-5) |
| Official Name: | Nam Sách township |
| Native Name: | Thị trấn Nam Sách |
| Pushpin Map: | Vietnam |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Red River Delta |
| Subdivision Type2: | Province |
| Subdivision Name2: | Hải Dương |
| Subdivision Type3: | District |
| Subdivision Name3: | Nam Sách |
| Unit Pref: | Imperial |
| Timezone: | UTC + 7 |
| Utc Offset: | +7 |
| Coordinates: | 20.9908°N 106.3342°W |
Nam Sách is a township (Vietnamese: thị trấn) and capital of Nam Sách District, Hải Dương Province, Vietnam.[1]