| Andainette | |
| Pushpin Map: | France#France Normandy |
| Source1 Location: | Champsecret (Orne) |
| Source1 Elevation: | 250 m |
| Mouth: | Varenne |
| Mouth Location: | Pont de Pierre (Orne) |
| Mouth Coordinates: | 48.6068°N -0.6099°W |
| Mouth Elevation: | 142 m |
| Progression: | Varenne→ |
The Andainette is a river in the department of Orne, in the Normandy region, France. It is a left tributary of the Varenne, thus a sub-tributary of the river Loire via the Mayenne and Maine. It is long, and has a catchment area of .[1] The valleys of the Andainette and its tributaries are protected as a Natura 2000 site called Bassin de l'Andainette.[2]