sometimes spelled incorrectly as Detah,[6] is a First Nations[7] community in the North Slave Region of the Northwest Territories, Canada.

Located just southeast of the capital of Yellowknife, it is a 6.5 km (4.0 mi) drive from that city by ice road across the north arm of Great Slave Lake in winter or a 27 km (17 mi) drive via the Ingraham Trail, year-round.

The name T'é?ehdaá means 'Burnt Point' in the Wíílíídeh dialect and was simplified to Dettah when non-indigenous people could not pronounce it.

[8] Dettah has a subarctic climate (Dfc) with long, severely cold winters and short but mild, sometimes warm summers.

Weather records are from Yellowknife Airport, approximately 9 km (5.6 mi) northwest of Dettah.