| La Fresnais | |
| Commune Status: | Commune |
| Coordinates: | 48.5964°N -1.8422°W |
| Insee: | 35116 |
| Postal Code: | 35111 |
| Arrondissement: | Saint-Malo |
| Canton: | Dol-de-Bretagne |
| Mayor: | Éric Poussin[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Pays de Saint-Malo |
| Elevation Min M: | 1 |
| Elevation Max M: | 8 |
| Area Km2: | 14.43 |
La Fresnais (pronounced as /fr/; br|An Onneg) is a commune in the Ille-et-Vilaine department of Brittany in north-western France.
Inhabitants of La Fresnais are called Fresnaisiens in French.