| Official Name: | Arpa Darreh |
| Native Name: | آرپادره |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Hamadan |
| Subdivision Type2: | County |
| Subdivision Name2: | Razan |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Sardrud |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Sardrud-e Olya |
| Population As Of: | 2006 |
| Population Total: | 955 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 35.6914°N 48.805°W |
Arpa Darreh (Persian: آرپادره, also Romanized as Ārpā Darreh and Ārpādarah; also known as Ārpeh Darreh) is a village in Sardrud-e Olya Rural District, Sardrud District, Razan County, Hamadan Province, Iran. At the 2006 census, its population was 955, in 229 families.