小囊鼠属（白耳小囊鼠），哺乳纲、囓齿目、更格卢鼠科的一属，而与小囊鼠属（白耳小囊鼠）同科的动物尚有刚毛囊鼠属（刚毛囊鼠）等之数种哺乳动物。

Perognathus is a genus of pocket mouse. Like other members of their family they are more closely related to pocket gophers than to true mice.