| Tarjanli | |
| Native Name: | Persian: ترجنلي |
| Native Name Lang: | fa |
| Settlement Type: | Village |
| Pushpin Map: | Iran |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Country |
| Subdivision Name: | Iran |
| Subdivision Type1: | Province |
| Subdivision Name1: | Golestan |
| Subdivision Type2: | County |
| Subdivision Name2: | Galikash |
| Subdivision Type3: | District |
| Subdivision Name3: | Loveh |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Golestan |
| Unit Pref: | Metric |
| Population As Of: | 2016 |
| Population Total: | 1343 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
Tarjanli (Persian: ترجنلي) is a village in Golestan Rural District of Loveh District, Galikash County, Golestan province, Iran.
At the time of the 2006 National Census, the village's population was 1,162 in 313 households, when it was in Qaravolan Rural District of the former Galikash District of Minudasht County.[2] The following census in 2011 counted 1,308 people in 358 households,[3] by which time the district had been separated from the county in the establishment of Galikash County. The rural district was transferred to the new Loveh District, and Tarjanli was transferred to Golestan Rural District created within the district.[4] The 2016 census measured the population of the village as 1,343 people in 407 households. It was the most populous village in its rural district.[5]