| Gwyrfai | |
| Hq: | Caernarvon |
| Status: | Rural District |
| Start: | 1894 |
| End: | 1974 |
| Replace: | Arfon, Dwyfor |
| Populationfirst: | 29,838 |
| Populationfirstyear: | 1901 |
| Populationlast: | 21,234 |
| Populationlastyear: | 1971 |
| Areafirst: | 70441acres |
| Areafirstyear: | 1901 |
| Arealast: | 96475acres |
| Arealastyear: | 1934 |
Gwyrfai was a rural district in the administrative county of Caernarvonshire from 1894 to 1974.
Named after the Afon Gwyrfai, the district was formed under the Local Government Act 1894, taking over the area of the Carnarvon Rural Sanitary District. The district was abolished in 1974 by the Local Government Act 1972. Beddgelert and Clynnog were included in the district of Dwyfor, with the rest of the rural district becoming part of the Borough of Arfon, both in the new county of Gwynedd.
In 1934, on the abolition of Glaslyn Rural District, the parish of Beddgelert was added.