| Official Name: | Sidorovka |
| Native Name: | Сидоровка |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Altai Krai#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Altai Krai |
| Subdivision Name3: | Romanovsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +7:00 |
| Coordinates: | 52.5333°N 125°W[1] |
Sidorovka (Russian: Сидоровка) is a rural locality (a selo) and the administrative center of Sidorovsky Selsoviet, Romanovsky District, Altai Krai, Russia. The population was 1,287 as of 2013.[2] There are 8 streets.
Sidorovka is located 38 km west of Romanovo (the district's administrative centre) by road. Zakladnoye is the nearest rural locality.[3]