Thuận Bắc is a former district (huyện) of Ninh Thuận province in the Southeast region of Vietnam.

Geography Thuan Bac district is located in the northeast of Ninh Thuan province, geographically:

The northeast borders the East Sea (South China Sea) The west borders Bac Ai The east and south of the district borders Ninh Hai The north borders Cam Ranh city, Khanh Hoa province.

Thuan Bac district has an area of , population in 2019 is 43,322 people, population density reaches 136 people/km2

History Before 2005, Thuan Bac district belonged to Ninh Hai district.

In 2025, the district was reorganized into Ninh Hải Commune, Thuận Bắc Commune, and Công Hải Commune.

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