| Country: | Wales |
| Official Name: | Pontsiân |
| Coordinates: | 52.0943°N -4.2882°W |
| Unitary Wales: | Ceredigion |
| Lieutenancy Wales: | Dyfed |
| Constituency Westminster: | Ceredigion Preseli |
| Constituency Welsh Assembly: | Ceredigion |
| Post Town: | Llandysul |
| Postcode District: | SA44 |
| Postcode Area: | SA |
| Dial Code: | 01545 |
| Os Grid Reference: | SN442491 |
| Cardiff Distance Mi: | 90 |
| Cardiff Distance: | SE |
| Static Image: | Clettwr Fawr, Pont-Siân, Ceredigion.jpg |
| Static Image Width: | 250px |
Pontsiân is a village in the county of Ceredigion, Wales. It lies on the banks of the river Cletwr, a minor tributary to the Afon Teifi.
Located in a rural area, the main industry is agriculture. The village itself has a popular primary school, along with a village shop (branded as 'PREMIER') and a village hall.