| Official Name: | Arinj |
| Native Name: | Առինջ |
| Settlement Type: | Village |
| Pushpin Map: | Armenia |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Name: | Armenia |
| Subdivision Type1: | Marz (Province) |
| Subdivision Name1: | Kotayk |
| Image Alt: | Armenian gray stone church |
| Established Title: | First mentioned |
| Established Date: | 15th century |
| Area Total Km2: | 8.45 |
| Population As Of: | 2011 census |
| Population Total: | 6,220 |
| Population Density Km2: | auto |
| Timezone: | |
| Utc Offset: | +4 |
| Coordinates: | 40.2314°N 44.5711°W |
| Elevation M: | 1,300 |
| Website: | Official website |
| Footnotes: | Source: Population[1] |
Arinj (hy|Առինջ), is a major village located just north of Yerevan in the Kotayk Province of Armenia. Arinj is an upscale suburb with several mansions belonging to multimillionaires located there, including the mansion of Gagik Tsarukyan, founder of the Prosperous Armenia party.
The village is 41 km south of the provincial capital Hrazdan. As of the 2011 census, the population of the village is 6,220.