| Country: | Wales |
| Coordinates: | 52.874°N -4.573°W |
| Official Name: | Llaniestyn |
| Static Image Name: | Llaniestyn village - geograph.org.uk - 186903.jpg |
| Static Image Caption: | Llaniestyn |
| Unitary Wales: | Gwynedd |
| Lieutenancy Wales: | Gwynedd |
| Constituency Welsh Assembly: | Dwyfor Meirionnydd |
| Constituency Westminster: | Dwyfor Meirionnydd |
| Community Wales: | Tudweiliog |
| Postcode District: | LL53 |
| Postcode Area: | LL |
| Post Town: | PWLLHELI |
| Dial Code: | 01758 |
| Os Grid Reference: | SH268338 |
Llaniestyn is a village and former civil parish in the Welsh county of Gwynedd. The parish was abolished in 1934, and divided between Tudweiliog and Botwnnog.[1] St Iestyn's Church stands in the centre of the village and is a Grade I listed building.