| Country: | Wales |
| Coordinates: | 52.914°N -4.549°W |
| Official Name: | Ceidio |
| Static Image Name: | Eglwys - Capel Ceidio Sant - Saint Ceidio's Church - Chapel - geograph.org.uk - 555104.jpg |
| Static Image Width: | 250 |
| Static Image Caption: | St Ceidio's Church |
| Unitary Wales: | Gwynedd |
| Lieutenancy Wales: | Gwynedd |
| Constituency Welsh Assembly: | Dwyfor Meirionnydd |
| Constituency Westminster: | Caernarfon |
| Community Wales: | Buan |
| Postcode District: | LL53 |
| Postcode Area: | LL |
| Post Town: | PWLLHELI |
| Dial Code: | 01758 |
| Os Grid Reference: | SH2838 |
Ceidio is a former civil parish in the Welsh county of Gwynedd. It was abolished in 1934, and incorporated into Buan.[1]