| Vaiaau | |
| Insee: | 987 |
| Administrative Subdivision: | Leeward Islands |
| Type: | Associated commune |
| Commune: | Tumaraa |
| Utc Offset: | −10:00 |
| Map Caption: | Location within French Polynesia |
| Elevation M: | 8 |
| Population: | 782 |
| Population Date: | 2022 |
| Population Footnotes: | [1] |
Vaiaau, also known as Vaia'au is an associated commune on the island of Raiatea, in French Polynesia. It is part of the commune Tumaraa. According to the 2022 census, it had a population of 782.[1]