| Ndao | |
| Local Name: | Indonesian: Pulau Ndao, Rai Dhao |
| Nickname: | Rai Kahore |
| Location: | Timor Sea |
| Archipelago: | Lesser Sunda Islands (Rote Islands) |
| Area Km2: | 1419 |
| Population: | 3,963 |
| Ethnic Groups: | Dhao |
| Country: | Indonesia |
| Timezone1: | Indonesia Central Standard Time |
| Utc Offset1: | +08:00 |
| Country Admin Divisions Title: | Province |
| Country Admin Divisions Title 1: | Regency |
| Country Admin Divisions 1: | Rote Ndao |
| Country Admin Divisions: | East Nusa Tenggara |
Ndao is one of the southernmost islands of the Indonesian archipelago.[1] It is part of Lesser Sunda Islands and is located west of the island of Rote Island, from the coast Australia and from the Ashmore and Cartier Islands.
Administratively, Ndao forms, together with Rote and neighboring islands, the Rote Ndao Regency after the regency was separated from Kupang province.
Ndao has some areas that are popular for surfing.