| Official Name: | Posht Mekh |
| Native Name: | پشت مخ |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Gilan |
| Subdivision Type2: | County |
| Subdivision Name2: | Sowme'eh Sara |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Mirza Kuchek Janghli |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Gurab Zarmikh |
| Population As Of: | 2006 |
| Population Total: | 703 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 37.3225°N 49.1925°W |
Posht Mekh (fa|پشت مخ, also Romanized as Posht Makh; also known as Pushtamah and Pushtamikh) is a village in Gurab Zarmikh Rural District, Mirza Kuchek Janghli District, Sowme'eh Sara County, Gilan Province, Iran. At the 2006 census, its population was 703, in 199 families.