The white-lipped mud turtle (Kinosternon leucostomum) is a species of mud turtle in the family Kinosternidae.

The species is endemic to Central America and northwestern South America.

The synonym, Cinosternon spurrelli Boulenger, 1913, which is a synonym of Kinosternon leucostomum postinguinale, was named in honor of British zoologist Herbert George Flaxman Spurrell.

[2] Kinosternon leucostomum is found in Mexico, Belize, Costa Rica, Guatemala, Honduras, Nicaragua, Panama, Colombia, Ecuador, and Peru.

[3]Nota bene: A trinomial authority in parentheses indicates that the subspecies was originally described in a genus other than Kinosternon.