| Official Name: | Tatlyar |
| Native Name: | Татляр Татлар |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Dagestan#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Type1: | Region |
| Subdivision Name1: | Republic of Dagestan |
| Subdivision Type2: | County |
| Subdivision Type3: | District |
| Subdivision Name3: | Derbentsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +3:00 |
| Coordinates: | 42.1833°N 49°W[1] |
Tatlyar (Russian: Татляр; Azerbaijani: Татлар, Tatlar) is a rural locality (a selo) and the administrative centre of Tatlyarsky Selsoviet, Derbentsky District, Republic of Dagestan, Russia. The population was 1,510 as of 2010.[2] There are 30 streets.[3]
Tatlyar is located 29 km northwest of Derbent (the district's administrative centre) by road. Karadagly and Ullu-Terkeme are the nearest rural localities.[4]
Azerbaijanis and Dargins live there.