| Vaadhoo | |
| Native Name Lang: | dv |
| Settlement Type: | Inhabited island |
| Pushpin Map: | Maldives |
| Pushpin Relief: | y |
| Pushpin Mapsize: | 250 |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Maldives |
| Coordinates: | 5.8553°N 72.9908°W |
| Subdivision Type: | Country |
| Subdivision Name: | Maldives |
| Subdivision Type1: | Geographic atoll |
| Subdivision Type2: | Administrative atoll |
| Subdivision Name2: | Northern Maalhosmadulu Atoll |
| Subdivision Type3: | Distance to Malé |
| Subdivision Name3: | 194.46km (120.83miles) |
| Seat Type: | Capital |
| Parts Type: | Geographic atolls |
| Parts Style: | list |
| Leader Title: | Council |
| Leader Title3: | Mayor |
| Leader Title4: | Island Chief |
| Unit Pref: | Metric |
| Length Km: | 1.450 |
| Width Km: | 0.400 |
| Population Footnotes: | [1] |
| Population Total: | 398 (including foreigners) |
| Population As Of: | 2014 |
| Population Density Km2: | auto |
| Utc Offset: | +05:00 |
| Postal Code Type: | Assigned Letter |
| Postal2 Code Type: | Assigned Letter |
| Area Code Type: | Area code(s) |
| Blank Name Sec2: | Number of Islands |
| Blank1 Name Sec2: | Inhabited |
| Blank2 Name Sec2: | Uninhabited |
| Blank3 Name Sec2: | Total |
Vaadhoo (Dhivehi: ވާދޫ) is one of the inhabited islands of Raa Atoll, Maldives. Famous for the bioluminescent plankton (Redhan), the spectacular "Sea of Stars" can be experienced in this island yearly. With clean roads and white sandy beaches, Vaadhoo is one of the most beautiful inhabited islands in the Maldives and its local tourism industry is expected to boom in the upcoming years.
The island is 194.460NaN0 north of the country's capital, Malé.[2]
Vaadhoo island is famous for the 'sea of stars.' This marine bioluminescence is generated by phytoplankton known as dinoflagellates. Woodland Hastings of Harvard University has for the first time identified a special channel in the dinoflagellate cell membrane that responds to electrical signals—offering a potential mechanism for how the algae create their unique illumination.
Total population of the island was more than 500 in 2007.