The alpine chipmunk (Neotamias alpinus) is a species of chipmunk native to the high elevations of the Sierra Nevada of California. They have been observed at altitudes from around 2,300 meters (7,500 ft) to 3,900 meters (12,800 ft), though they rarely occur below 2,500 meters (8,200 ft).

They have a brown forehead with three white stripes on their cheeks and four on their backs. They weigh around 80 grams.

The alpine chipmunk feed on the seeds of sedges, grasses, and pines. They generally eat their food on the ground. They do not generally require a source of water other than food, but will use it given the opportunity.

They nest in crevices between rocks, taking advantage of the micro-climatic conditions (i.e. higher temperatures) that exist there. Their young are born in June and July, in litters of 3-6.

They are considered Diurnal, though they exhibit some nocturnal activity during the summer. They Hibernate from November through April, frequently awakening to eat.