Eirenis is a genus of Old World snakes in the family Colubridae.

[1] The genus Eirenis contains the following 23 described species:[1] Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Eirenis.

Some of the species within this genus have a narrow geographic distribution; for example, Eirenis mcmahoni occurs only within a single ecoregion along the Afghanistan/Pakistan border, which region is known as the Registan-North Pakistan sandy desert.

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