| Maiʻao | |
| Native Name: | Maiʻao |
| Native Name Link: | Tahitian language |
| Location: | Pacific Ocean |
| Archipelago: | Society Islands |
| Total Islands: | 2 |
| Major Islands: | Maiʻao |
| Area Km2: | 8.8 |
| Elevation M: | 154 |
| Country: | France |
| Country Admin Divisions Title: | Overseas collectivity |
| Country Admin Divisions: | French Polynesia |
| Population As Of: | 2022 |
| Population: | 343[1] |
| Density Km2: | 41 |
Maiʻao, also rendered Maiao in languages other than Tahitian, is an 8.8km2 island formation located 78km (48miles) southwest of Moʻorea and one of the Windward Islands (French: Îles du Vent) in French Polynesia.
The island formation consists of one high island with a peak elevation of 154 meters (505') and a low island (or motu) that winds along the base of the high island. The formation encloses two hypersaline lagoons called Roto Iti and Roto Rahi. The island also has a lagoon at its edge. All lagoons are connected through narrow channels. The island is home to 343 people (2022 census).
The island is administratively part of the commune (municipality) of Moʻorea-Maiʻao, itself in the administrative subdivision of the Windward Islands.