Parahippus leonensis is an extinct proto-horse of the family Equidae that was endemic to North America during the Miocene from 23.030 to 16.3 Ma living for approximately 6.73 million years.

Its type locality is Griscom Plantation site, which is in a Miocene marine limestone in the Torreya Formation of Florida.

It was recombined as Hippodon leonensis by Quinn (1955); it was considered a nomen dubium by Macdonald (1992).

This genus of horses had a long head with eyes situated back from the middle of the skull.

[7] Parahippus leonensis was very likely the prey of Amphicyon or bear-dog, and dog-like Temnocyon.