| Leng Su Sìn | |
| Settlement Type: | Commune and village |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Vietnam |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Điện Biên |
| Subdivision Type2: | District |
| Subdivision Name2: | Mường Nhé |
| Timezone: | Indochina Time |
| Utc Offset: | +07:00 |
Leng Su Sìn is a commune (xã) and village of the Mường Nhé District of Điện Biên Province, northwestern Vietnam.
Leng Su Sin has been historically populated by the Hani people but have witnessed large Hmong migration in recent years.