| Official Name: | Arbab |
| Native Name: | ارباب |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Razavi Khorasan |
| Subdivision Type2: | County |
| Subdivision Name2: | Dargaz |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Now Khandan |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Dorungar |
| Population As Of: | 2006 |
| Population Total: | 126 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 37.6833°N 58.5833°W |
Arbab (Persian: ارباب, also Romanized as Arbāb) is a village in Dorungar Rural District, Now Khandan District, Dargaz County, Razavi Khorasan Province, Iran. At the 2006 census, its population was 126, in 33 families.
It is a notable family name (نجیب زاده) in Middle East especially in country of IRAN (PERSIA). It indicates that those families have a notable background in the history of Iran and were mostly landlords, heads of their tribes or states back in the times of kingdom in Iran (PERSIA) for centuries.