| Official Name: | Didejan |
| Native Name: | ديدجان |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Isfahan |
| Subdivision Type2: | County |
| Subdivision Name2: | Semirom |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Padena |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Padena-ye Vosta |
| Population As Of: | 2006 |
| Population Total: | 161 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 31.0644°N 51.6181°W |
Didejan (Persian: ديدجان, also Romanized as Dīdejān; also known as Dīdeh Jān) is a village in Padena-ye Vosta Rural District, Padena District, Semirom County, Isfahan Province, Iran.[1] At the 2006 census, its population was 161, in 35 families.