| Official Name: | Bolshaya Mos |
| Native Name: | Большая Мось |
| Settlement Type: | Village |
| Pushpin Map: | Russia Perm Krai#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Type1: | Region |
| Subdivision Name1: | Perm Krai |
| Subdivision Type2: | County |
| Subdivision Type3: | District |
| Subdivision Name3: | Permsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +5:00 |
| Coordinates: | 57.9333°N 77°W[1] |
Bolshaya Mos (Russian: Большая Мось) is a rural locality (a village) in Frolovskoye Rural Settlement, Permsky District, Perm Krai, Russia. The population was 141 as of 2010.[2] There are 62 streets.
Bolshaya Mos is located 15 km southeast of Perm (the district's administrative centre) by road. Martyanovo is the nearest rural locality.[3]