| Official Name: | Bolshoy Lug |
| Native Name: | Большой Луг |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Buryatia#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Republic of Buryatia |
| Subdivision Name3: | Kyakhtinsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +8:00 |
| Coordinates: | 50.6°N 152°W[1] |
Bolshoy Lug (Russian: Большой Луг; Buriat: Ехэ Нуга, Yekhe Nuga) is a rural locality (a selo) in Kyakhtinsky District, Republic of Buryatia, Russia. The population was 653 as of 2010.[2] There are 11 streets.
Bolshoy Lug is located 58 km northeast of Kyakhta (the district's administrative centre) by road. Kharlun is the nearest rural locality.[3]