| Official Name: | Bolshaya Kudara |
| Native Name: | Большая Кудара |
| 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: | 50.2°N 109°W[1] |
Bolshaya Kudara (Russian: Большая Кудара; Buriat: Ехэ Хγдэри, Yekhe Khüderi) is a rural locality (a selo) in Kyakhtinsky District, Republic of Buryatia, Russia. The population was 740 as of 2010.[2] There are 17 streets.
Bolshaya Kudara is located 65 km southeast of Kyakhta (the district's administrative centre) by road. Oktyabrsky is the nearest rural locality.[3]