Ursus deningeri (Deninger's bear) is an extinct species of mammal of the family Ursidae (bears), endemic to Eurasia during the Pleistocene for approximately 1.7 million years, from ~1.8 Mya to 100,000 years ago. The range of this bear has been found to encompass both Europe and Asia, demonstrating the ability of the species to adapt to many Pleistocene environments. U. deningeri is a descendant of U. savini and an ancestor of U. spelaeus.