| Official Name: | Marushka |
| Native Name: | Марушка |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Altai Krai#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Altai Krai |
| Subdivision Name3: | Tselinny District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +7:00 |
| Coordinates: | 52.8667°N 114°W[1] |
Marushka (Russian: Марушка) is a rural locality (a selo) and the administrative center of Marushinsky Selsoviet, Tselinny District, Altai Krai, Russia. The population was 1,059 as of 2013.[2] It was founded in 1777. There are 19 streets.
Marushka is located 36 km south of Tselinnoye (the district's administrative centre) by road. Druzhba is the nearest rural locality.[3]