| Country: | Wales |
| Official Name: | Llanwnda |
| Coordinates: | 53.101°N -4.278°W |
| Static Image Name: | Llanwnda - geograph.org.uk - 1062786.jpg |
| Static Image Caption: | Llanwnda |
| Population: | 1,994 |
| Population Ref: | (2011) |
| Community Wales: | Llanwnda |
| Unitary Wales: | Gwynedd |
| Constituency Welsh Assembly: | Arfon |
| Constituency Westminster: | Arfon |
| Post Town: | CAERNARFON |
| Postcode District: | LL54 |
| Postcode Area: | LL |
| Dial Code: | 01286 |
| Os Grid Reference: | SH475584 |
Llanwnda is a village, community and electoral ward in Gwynedd, Wales. The community has a population of 1,994 as taken at the 2011 Census.[1] It is situated about 3 miles to the south of Caernarfon, and 5 miles south-west of Llanrug. According to the 2011 Census, 81.6% of the population were Welsh speakers. The image on the right is of Glanrhyd, Llanwnda, not the village of Llanwnda less than a mile to the south. The community includes the slate mining villages of Rhosgadfan and Rhostryfan.