| Official Name: | Aninsk |
| Native Name: | Анинск |
| Settlement Type: | Ulus |
| Pushpin Map: | Russia Buryatia#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Republic of Buryatia |
| Subdivision Name3: | Khorinsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +8:00 |
| Coordinates: | 52.1833°N 159°W[1] |
Aninsk (Russian: Анинск; Buriat: Анаа, Anaa) is a rural locality (an ulus) in Khorinsky District, Republic of Buryatia, Russia. The population was 270 as of 2010.[2] There are 10 streets.
Aninsk is located 6 km northeast of Khorinsk (the district's administrative centre) by road. Khorinsk is the nearest rural locality.[3]