Allopeas prestoni is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinidae.
The length of the shell attains 11 mm, its diameter 3.25 mm.
(Original description in Latin) The slightly perforate and elongate-cylindrical shell is translucent, thin, and exhibits a horny or waxy-horny coloration. The protoconch is somewhat blunt. The shell comprises 8.5 flatly convex whorls, delicately striated with growth lines. The body whorl accounts for 9/20 of the total shell length. The suture is distinctly impressed. The aperture is elongate-ovate in shape. The peristome is simple and sharp, with the columellar margin slightly reflexed at the base, nearly covering the perforation.
The distribution of Allopeas prestoni includes: