Geman Deng
| Nationality Classification | 待识别的族群 "Unclassified Minority" |
|---|---|
| Secondary Nationality | 藏族 Tibetan |
| Language or Dialect Name (Chinese) | 格曼僜（登）语 |
| Language or Dialect Name (English) | Geman Deng |
| ISO 639-3 Code | mxj |
| Language Stock Classification | 藏缅语族 Sino-Tibetan, Tibeto-Burman |
| Primary Province or Region | 西藏自治区 Tibet (Xizang) Autonomous Region |
| Location (in China) | Tibetan Autonomous Region: in several townships in Chayu (Zayü) county, Nyingchi prefecture, on the tablelands on either side of the lower reaches of the Chayu (Zayü) River |
| Estimated Speaker Population (in China) | 200 |
| Speaker Population Year of Estimate | 1999 |