| Official Name: | Polovinkino |
| Native Name: | Половинкино |
| Settlement Type: | Village |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Altai Krai |
| Subdivision Name3: | Rubtsovsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +7:00 |
| Coordinates: | 51.4167°N 95°W[1] |
Polovinkino (Russian: Половинкино) is a rural locality (a selo) and the administrative center of Polovinkinsky Selsoviet of Rubtsovsky District, Altai Krai, Russia. The population was 1,103 in 2016.[2] There are 14 streets.
Polovinkino is located 12 km south of Rubtsovsk (the district's administrative centre) by road. Rubtsovsk and Samarka are the nearest rural localities.[3]