| Deyah | |
| Also Known As: | Dusun Deyah |
| States: | Indonesia |
| Region: | Kalimantan |
| Speakers: | 20,000 |
| Date: | 1981 |
| Ref: | e18 |
| Familycolor: | Austronesian |
| Fam2: | Malayo-Polynesian |
| Fam3: | East Barito |
| Fam4: | Central–South |
| Iso3: | dun |
| Glotto: | dusu1271 |
| Glottorefname: | Dusun Deyah |
Dusun Deyah, or Deyah, is a language spoken by a group of Dusun people of South Kalimantan province, Indonesia. It is spoken in Tabalong Regency across two districts: Haruai, in the villages of Kinarum, Kaong, Pangelak, and Bilas, and Muara Uya, especially in the village of Mangkopom.