Gongbo'gyamda County (; ) is a county of Nyingchi (or Nyingtri) City in the Tibet Autonomous Region, China, lying approximately east of Lhasa at its central point. Its main geographical feature is Basum Tso, a green lake about above sea level.
In 1587, Gyampo Monastery was established. Subsequently, a town named "Gyamda", meaning "valley outlet of Gyampo", was developed near the monastery. The region was originally under control of Derge Gyalpos. After the Qing Dynasty took over Derge, the region was managed by the Tibetan Government as Gyamda Dzong. In 1960, Gyamda Dzong merged with West Dengke Dzong to form the modern Gongbo'gyamda Dzong.
Gongbo'gyamda County is located in the east of the Tibet Autonomous Region, to the south of the Nyenchen Tanglha Mountains, to the north of the Yarlung Tsangpo River and in the area of the middle branches of the Nyang River. With a population of 22,000, the county covers an area of 12,886 square kilometres. The average altitude of the county is 3,500 metres above sea level.Pagsum Lake had an area of 26 square kilometres.
Gongbo'gyamda County contains 3 towns and 6 townships.