| Official Name: | Hadan |
| Native Name: | هادان |
| Settlement Type: | village |
| Pushpin Map: | Iran |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Isfahan |
| Subdivision Type2: | County |
| Subdivision Name2: | Buin va Miandasht |
| Subdivision Type3: | Bakhsh |
| Subdivision Name3: | Central |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Sardshir |
| Population As Of: | 2006 |
| Population Total: | 498 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Timezone Dst: | IRDT |
| Utc Offset Dst: | +4:30 |
| Coordinates: | 33.1231°N 50.2458°W |
Hadan (Persian: هادان, also Romanized as Hādān and Hadān; also known as Ardūn, Hādūn, and Hāvān) is a village in Sardshir Rural District, in the Central District of Buin va Miandasht County, Isfahan Province, Iran. At the 2006 census, its population was 498, in 115 families.
Hadan is a part of larger region known as Fereydan (Persian: فریدن, Armenian: Փերիա).[1] Up until the 1990s, the village was historically populated by Armenians who were brought to this part of Iran by Shah Abbas of Safavid dynasty in 1603 and 1604, following the Nakhchivan deportations. After the revolution in 1979, many Armenians began emigrating out of Hadan. As of 2022, only a single Armenian remains in the village on a visiting basis.