Heteromeryx is an extinct genus of artiodactyl, of the family Protoceratidae, endemic to North America.

They lived during the Late Eocene 37.2—33.9 Ma, existing for approximately 3 million years.

[1] They resembled deer, but were more closely related to camelids.

Its name comes from hetero (ἕτερος) "different' and meryx "ruminant".

This prehistoric even-toed ungulate-related article is a stub.