Porthidium yucatanicum is a pit viper species found in Mexico.

The females tend to be larger than the males.

[2] Found in the northern half of the Yucatán Peninsula in Mexico.

The type locality given is "Chichen Itza, Yucatán" [Mexico].

[4] Species are listed as such due to their wide distribution, presumed large population, or because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.