The barren ground shrew (Sorex ugyunak) is a small shrew found in northern Canada west of Hudson Bay and in Alaska.

It is similar in appearance and thought to be closely related to the Saint Lawrence Island shrew (S. jacksoni) and Pribilof Island shrew (S. pribilofensis).

This animal is found north of the tree line, in wet meadows or thickets in the tundra.

It eats insects, small invertebrates and seeds.

The epithet name ugyunak is the Inuit word for "shrew".