| Type: | town |
| Cairns Bay | |
| State: | tas |
| Pop: | 76 |
| Pop Footnotes: | [1] |
| Postcode: | 7116 |
| Region: | South-east |
| Location1: | Huonville |
| Dist1: | 25 |
| Dir1: | SW |
| Lga: | Huon Valley |
| Stategov: | Franklin |
| Fedgov: | Franklin |
| Near-Nw: | Geeveston |
| Near-N: | Port Huon |
| Near-Ne: | Port Huon |
| Near-E: | Huon River |
| Near-W: | Geeveston |
| Near-Sw: | Geeveston |
| Near-S: | Waterloo |
| Near-Se: | Waterloo |
Cairns Bay is a rural locality in the local government area (LGA) of Huon Valley in the South-east LGA region of Tasmania. The locality is about south-west of the town of Huonville. The 2016 census recorded a population of 76 for the state suburb of Cairns Bay.[1]
Cairns Bay was gazetted as a locality in 1965.[2]
The waters of the Huon River estuary form the eastern boundary.
Route C634 (Scotts Road) runs through from north-west to south.[2] [3]