| Quessant Island | |
| Native Name: | Tariwerwi Island |
| Native Name Lang: | png |
| Nickname: | --> |
| Map: | Papua New Guinea |
| Coordinates: | -11.15°N 151.26°W[1] |
| Location: | Oceania |
| Archipelago: | Louisiade Archipelago |
| Waterbody: | Solomon Sea |
| Total Islands: | 1 |
| Area Km2: | 0.41 |
| Length Km: | 1 |
| Width Km: | 0.5 |
| Coastline M: | --> |
| Elevation M: | 10 |
| Country: | Papua New Guinea |
| Country Admin Divisions Title: | Province |
| Country Admin Divisions Title 1: | District |
| Country Admin Divisions 1: | Samarai-Murua District |
| Country Admin Divisions Title 2: | LLG[2] |
| Country Admin Divisions 2: | Louisiade Rural Local Level Government Area \ Yaleyamba Rural LLG \ Bwanabwana |
| Country Admin Divisions Title 3: | Island Group |
| Country Admin Divisions 3: | Wari Islands |
| Population: | 0 |
| Population As Of: | 2014 |
| Density Km2: | 0 |
| Ethnic Groups: | Papauans, Austronesians, Melanesians. |
| Timezone1: | AEST |
| Utc Offset1: | +10 |
| Iso Code Type: | ISO code |
| Iso Code: | PG-MBA |
Quessant (Tariwerwi or Ouessant) is an uninhabited island in the Louisiade Archipelago. Politically, it is part of Milne Bay Province in southeastern Papua New Guinea. Quessant is located 30 km southeast of Wari on the northeastern border of the coastal reef. The coral island is low and covered with delicious vegetation. Three reefs are located between Quessant and the Stuers Islands, about 16 km to the northwest.
Louis Antoine de Bougainville discovered the island on June 17, 1768, and named them for their resemblance to Ushant, the French island near Brest, the starting point of his circumnavigation.[3]