Ilingoceros is an extinct genus of the artiodactyl family Antilocapridae from the Miocene of North America. At 1.8 metres (5.9 ft) in body length, the animal would have been slightly bigger than the related modern pronghorn. It had straight, spiraled horns, which ended in forked tips. Ilingoceros was named by Merriam (1909) and assigned to Antilocapridae by Merriam (1909) and Janis and Manning (1998).