D'Entrecasteaux Islands /ˌdɒntrəˈkæstoʊ/ (French: [dɑ̃tʁəkasto]) are situated near the eastern tip of New Guinea in the Solomon Sea in Milne Bay Province of Papua New Guinea. The group spans a distance of 160 km (99 mi), has a total land area of approximately 3,100 km2 (1,197 sq mi) and is separated from the Papua New Guinea mainland by the 30 km (19 mi) wide Ward Hunt Strait in the north and the 18 km (11 mi) wide Goschen Strait in the south. D'Entrecasteaux Islands show signs of volcanism.
The inhabitants of D'Entrecasteaux Islands are indigenous subsistence horticulturalists living in small, traditional settlements. People of this area produced and traded clay pots as well as participated in the Kula exchange of shell valuables, travelling widely to other islands on sea-going sailing canoes. During the more recent past, people harvested copra, trochus and pearl-shells and some timber for cash. Alluvial gold mining was once important and in recent years the area has been subject to mineral exploration.
The three principal islands, from northwest to southeast, are Goodenough (Nidula), then across Moresby Straight to Fergusson (Moratau), the largest of the three, and across Dawson Straight to Normanby (Duau). In addition there are numerous small islands and reefs. Sanaroa and Dobu are the most significant of the smaller islands, while Sori or Wild is named for the HMS Challenger's artist, John James Wild. The highest peak in the group is the 2,536 metres (8,320 ft) Mount Vineuo on Goodenough Island.