| Princess Thyra Island | |
| Native Name: | Prinsesse Thyra Ø |
| Native Name Link: | Danish language |
| Native Name Lang: | Danish |
| Nickname: | --> |
| Image Map Caption: | Map of Princess Thyra Island |
| Pushpin Map: | Greenland |
| Pushpin Label: | Princess Thyra Island |
| Pushpin Map Caption: | Location of Princess Thyra Island in Greenland |
| Coordinates: | 82°N -34°W |
| Etymology: | named after Princess Thyra of Denmark |
| Waterbody: | Wandel Sea |
| Area Km2: | 313 |
| Rank: | 22nt largest in Greenland |
| Length Km: | 36 |
| Width Km: | 28 |
| Coastline M: | --> |
| Elevation M: | 76 |
| Country: | Greenland |
| Country Admin Divisions Title: | Unincorporated area |
| Country Admin Divisions: | Northeast Greenland National Park |
| Country Area M2: | or |
| Country Area Ha: | --> |
| Population: | 0 |
| Population As Of: | 2022 |
| Density Km2: | 0 |
| Ethnic Groups: | none |
Princess Thyra Island (Danish: Prinsesse Thyra Ø) is an uninhabited island of the Wandel Sea, Greenland. The island is within King Frederick VIII Land in the Northeast Greenland National Park.[1] The island was named after Princess Thyra of Denmark.
This island is located east of Princess Margaret Island, to the northwest of Princess Dagmar Island close to the coast of far northeastern Greenland, in a bay of the Wandel Sea at the confluence of Denmark Sound and Independence Sound.[2]
The island has an area of 313 km ² and a shoreline of 85.7 kilometres. It was formerly part of Avannaa, originally Nordgrønland ("North Greenland"), one of the counties of Greenland until 31 December 2008.