| Avaj County | |
| Native Name: | Persian: شهرستان آوج |
| Settlement Type: | County |
| Image Map1: | IranQazvin-SVG.svg |
| Map Caption1: | Location of Qazvin province in Iran |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Qazvin |
| Seat Type: | Capital |
| Seat: | Avaj |
| Parts Type: | Districts |
| Parts Style: | para |
| P1: | Central |
| P2: | Abgarm |
| Population As Of: | 2016 |
| Population Total: | 43798 |
| Coordinates: | 35.7°N 61°W |
| Coordinates Footnotes: | [1] |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
Avaj County (Persian: شهرستان آوج) is in Qazvin province, Iran. Its capital is the city of Avaj.[2]
After the 2011 National Census, Abgarm and Avaj Districts were separated from Buin Zahra County in the establishment of Avaj County, which was divided into two districts and five rural districts, with Avaj as its capital.[2]
At the time of the 2016 census, the county's population was 43,798 in 13,818 households.[3]
Avaj County's population and administrative structure are shown in the following table.
| Administrative Divisions | 2016 | |
|---|---|---|
| Central District | 25,532 | |
| 9,883 | ||
| 2,699 | ||
| 7,808 | ||
| Avaj (city) | 5,142 | |
| Abgarm District | 18,265 | |
| 5,220 | ||
| 6,709 | ||
| Abgarm (city) | 6,336 | |
| Total | 43,798 | |