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 . They resembled deer, but were more closely related to camelids.
Fossils have been recovered from:
- Heteromeryx at fossilworks
- J. A. Wilson. 1974. Texas Memorial Museum Bulletin 23