| Official Name: | Mozhayka |
| Native Name: | Можайка |
| Settlement Type: | Settlement |
| Pushpin Map: | Russia Buryatia#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Republic of Buryatia |
| Subdivision Name3: | Yeravninsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +8:00 |
| Coordinates: | 52.4°N 157°W[1] |
Mozhayka (Russian: Можайка; Buriat: Мужыха, Mujykha) is a rural locality (a settlement) in Yeravninsky District, Republic of Buryatia, Russia. The population was 1,117 as of 2010.[2] There are 43 streets.
Mozhayka is located 55 km southwest of Sosnovo-Ozerskoye (the district's administrative centre) by road. Egita is the nearest rural locality.[3]