Gasa District or Gasa Dzongkhag (Dzongkha: མགར་ས་རྫོང་ཁག་; Wylie: Mgar-sa rdzong-khag) is one of the 20 dzongkhags (districts) comprising Bhutan. The northern part of Gasa District is a disputed zone under the control of the People`s Republic of China. The capital of Gasa District is Gasa Dzong near Gasa. It is located in the far north of the county and spans the Middle and High regions of the Tibetan Himalayas. The dominant language of the district is Dzongkha, which is the national language. Related languages, Layakha and Lunanakha, are spoken by semi-nomadic communities in the north of the district.