| Official Name: | Troitsk |
| Native Name: | Троицк |
| Settlement Type: | Settlement |
| Pushpin Map: | Russia Altai Krai#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Altai Krai |
| Subdivision Name3: | Kalmansky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +7:00 |
| Coordinates: | 52.8833°N 116°W[1] |
Troitsk (Russian: Троицк) is a rural locality (a settlement) in Kalmansky Selsoviet, Kalmansky District, Altai Krai, Russia. The population was 605 as of 2013.[2] There are 7 streets.
Troitsk is located on the right bank of the Kalmanka River, 4 km southeast of Kalmanka (the district's administrative centre) by road. Kalmanka is the nearest rural locality.[3]