| Tappeh Berdankan | |
| Native Name: | Persian: تپه بردنکان |
| Coordinates: | 32.2111°N 50.5708°W[1] |
| Map Type: | Iran |
| Location: | Mizdej-e Sofla Rural District of Junqan District, Farsan County, Chaharmahal and Bakhtiari province, Iran |
| Region: | Gay Province |
| Type: | Archaeological site |
| Part Of: | Rāwar-kust-ī-rōdbār Canton |
| Epochs: | Sasanian, Parthian, Achaemenid, Elamite, and Chalcolithic |
| Discovered: | 1986 |
| Archaeologists: | Alireza Khosrowzadeh |
| Management: | Cultural Heritage of Chaharmahal and Bakhtiari |
| Other Designation: | National monument No. 19527 |
Tappeh Berdankan (Persian: تپه بردنکان), also Romanized as Tappe Bardnakoon, is an archaeological site in Farsan County, Chaharmahal and Bakhtiari province, Iran. It is kilometers southeast of the village of Deh Cheshmeh, near the southern shore of the Pireghar River.
It is mainly a Sasanian site, although some pottery from the Parthian, Achaemenid, Elamite and Chalcolithic periods were also found in a few spots. During the late Sasanian era, the site nowadays known as Tappeh Berdankan was part of the canton of Rāwar-kust-ī-rōdbār and was an administrative centre of the province of Gay.
It provided for interactions between different provinces of Eranshahr, in particular Gay in Spahan, Ram-Ohrmazd, Ormazd-Ardashir and Weh-Andiyok-Shapur in Khuzistan, and Ig in Pars.
The site was illegally excavated and looted in the past, and thus only a minor part of the site remains undamaged. In 2016, Cultural Heritage of Chaharmahal and Bakhtiari mapped out the boundaries of the site and stated that the area would be monitored around the clock by the Protection Unit of the General Administration.[2]
Professional, government-approved excavations in 2017 and 2018 led to the excavation of many Sasanian-era items, including 559 clay bullae, amongst them administrative bullae.