| Official Name: | Armak |
| Native Name: | Армак |
| Native Name Lang: | ru |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Buryatia#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Type1: | Region |
| Subdivision Name1: | Republic of Buryatia |
| Subdivision Type2: | County |
| Subdivision Type3: | District |
| Subdivision Name3: | Dzhidinsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +8:00 |
| Coordinates: | 50.6°N 139°W[1] |
Armak (Russian: Армак) is a rural locality (a selo) and the administrative centre of Armakskoye Rural Settlement, Dzhidinsky District, Republic of Buryatia, Russia. The population was 468 as of 2017.[2] There are 4 streets.
Armak is located 67 km west of Petropavlovka (the district's administrative centre) by road. Altsak is the nearest rural locality.[3]