Southern Birch Mouse
Sicista subtilis
- Least concern
- Card rarity: Common
- Mammals

The southern birch mouse is a species of birch mouse in the family Sminthidae. It is native to southern Russia, Kazakhstan, and potentially northern Mongolia and China.
Classification
- Class
- Mammalia
- Order
- Rodentia
- Family
- Sminthidae
- Genus
- Sicista