Ursoidea is a superfamily of arctoid carnivoran mammals that includes the families Subparictidae,[1][2] Amphicynodontidae,[3][2] and Ursidae.

The last family includes the extant lineages of bears, as well as the extinct Hemicyoninae[4][5] and Ursavinae.

[6] The interrelationships of ursoids has had slight arrangements.

In the past it was thought the extinct Amphicyonidae were stem-bears based on morphological analysis of the ear region,[7] though the most recent publications on early amphicyonids suggests they were basal caniforms.

[2] The hemicyonines have been occasionally reclassified as a separate family.