Arqin should not be confused with Arqin Bolagh.
| Arqin | |
| Native Name: | Persian: ارقين |
| Native Name Lang: | fa |
| Settlement Type: | Village |
| Pushpin Map: | Iran |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Country |
| Subdivision Name: | Iran |
| Subdivision Type1: | Province |
| Subdivision Name1: | Zanjan |
| Subdivision Type2: | County |
| Subdivision Name2: | Khodabandeh |
| Subdivision Type3: | District |
| Subdivision Name3: | Sojas Rud |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Aq Bolagh |
| Unit Pref: | Metric |
| Population As Of: | 2016 |
| Population Total: | 1110 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
Arqin (Persian: ارقين) is a village in Aq Bolagh Rural District of Sojas Rud District of Khodabandeh County, Zanjan province, Iran.
At the time of the 2006 National Census, the village's population was 936 in 209 households.[2] The following census in 2011 counted 1,088 people in 308 households.[3] The 2016 census measured the population of the village as 1,110 people in 332 households. It was the most populous village in its rural district.[4]