Brush Deermouse
Peromyscus boylii
- Least concern
- Card rarity: Common
- Mammals

The brush mouse is a species of rodent in the family Cricetidae. It is a species of the genus Peromyscus, a closely related group of New World mice often called "deermice". It is found in mountainous areas of Mexico and the western United States at altitudes over 2,000 m (6,600 ft).
Classification
- Class
- Mammalia
- Order
- Rodentia
- Family
- Cricetidae
- Genus
- Peromyscus