The species within this genus are widely distributed throughout Mexico, Central and South America.

[1] The genus Leptophis belongs to the subfamily Colubrinae, of the family Colubridae.

nov. L. ahaetulla (Brazil) (paraphyletic) Snakes of the genus Leptophis are slender with a long tail.

The maxillary teeth, which number 20–32, are in a continuous series without any interspace, and are longest posteriorly.

[3] The following species and subspecies are currently recognized as being valid: Nota bene: A binomial authority or trinomial authority in parentheses indicates that the species or subspecies was originally described in a genus other than Leptophis.