犹因他兽科（Uintatheriidae）是已灭绝的一科哺乳动物，其下包含了犹因他兽。牠们属于恐角目，是原始的哺乳动物，有时被包含在踝节目下。

犹因他兽科下的戈壁兽由于缺乏其他犹因他兽科的角及尖牙，故牠有时被分类在自己的戈壁兽科下。

Uintatheriidae is a family of extinct ungulate mammals that includes Uintatherium. Uintatheres belong to the order Dinocerata, one of several extinct orders of primitive hoofed mammals that are sometimes united in the Condylarthra.

Uintatheres were the largest land animals of their time, surviving from the late Paleocene into the Uintan Epoch of the Middle Eocene. They were heavy animals, with thick legs, massive bones, broad feet, and tiny brains. The most distinctive feature of the great majority of species, however, was the presence of multiple blunt "horns", perhaps similar to the ossicones of modern giraffes, and the presence of large, sabre-like canine teeth. They were eventually replaced as large browsing animals by the even larger brontotheres.