Haa District (Dzongkha: ཧཱ་; Wylie: Haa; alternative spellings include "Ha") is one of the 20 dzongkhag or districts comprising Bhutan. Per the 2005 census, the population of Haa dzongkhag was 11,648, making it the second least populated dzongkhag in Bhutan after Gasa. The dominant language of the district is Dzongkha, the national language.
Haa's major feature is the Haa Valley, a steep north-south valley with a narrow floor. The name Haa (pronounced "hah"), as well as the more ancient name Has (Dzongkha: ཧས་; Wylie: Has; pronounced "hay"), connotes esoteric hiddenness. An alternative name for the district is "Hidden-Land Rice Valley."
More information on the Wikipedia page