Inagua is the southernmost district of the Bahamas comprising the islands of Great Inagua and Little Inagua.

Great Inagua is the third largest island in the Bahamas and lies about 55 miles (90 km) from the eastern tip of Cuba. The island is about 55 x 19 miles (90 x 30 km) in extent, the highest point being 132 ft (40 m) on East Hill. It encloses several lakes, most notably the 12-mile long Lake Rosa which occupies much of its western half. The population of Great Inagua is 969 (2000 census).

The island's capital and only harbour is Matthew Town , named after George Matthew a 19th century Governor of the Bahamas. This town houses the Morton Salt Company’s main facility, producing 500 tonnes of sea salt a year - the second largest solar saline operation in North America and Inagua's main industry. Great Inagua Airport (IATA: IGA, ICAO: MYIG) is located nearby.

There is a large bird sanctuary in the centre of the island with a population of more than 80,000 of West Indian flamingoes and many other exotic birds such as roseate spoonbills, pelicans, herons, egrets, and Bahama pintail ducks.

The neighbouring Little Inagua to the northeast is uninhabited and occupied by a Land and Sea Park.

The original settler name Heneagua was derived from a Spanish expression meaning 'water is to be found there'.