| Official Name: | Emamzadeh-ye Hoseyn Asghar |
| Native Name: | امامزاده حسين اصغر |
| Settlement Type: | village |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Razavi Khorasan |
| Subdivision Type2: | County |
| Subdivision Name2: | Nishapur |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Sarvelayat |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Barzanun |
| Population As Of: | 2006 |
| Population Total: | 15 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
Emamzadeh-ye Hoseyn Asghar (Persian: امامزاده حسين اصغر, also Romanized as Emāmzādeh-ye Ḩoseyn Āṣghar) is a village in Barzanun Rural District, Sarvelayat District, Nishapur County, Razavi Khorasan Province, Iran. At the 2006 census, its population was 15, in 7 families.