| Official Name: | Mamiz Ab |
| Native Name: | مميزاب |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Razavi Khorasan |
| Subdivision Type2: | County |
| Subdivision Name2: | Salehabad |
| Subdivision Type3: | Bakhsh |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Bagh-e Keshmir |
| Population As Of: | 2006 |
| Population Total: | 982 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 35.8658°N 60.8028°W |
Mamiz Ab (Persian: مميزاب, also Romanized as Mamīz Āb; also known as Mahīz Āb, Mamīzā, Mazmāgerd, and Mazmāgird) is a village in Bagh-e Keshmir Rural District, Salehabad County, Razavi Khorasan Province, Iran. At the 2006 census, its population was 982, in 216 families.