Punctum minutissimum is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Punctidae, the dot snails.

The shell of Punctum minutissimum is slightly translucent and pale brown in color.

The outer shell surface has a sculpture of radial striae, which are obvious under magnification.

[1] This species occurs in North America, from Maine to Florida, and west to Oregon and New Mexico.

[2] This small snail lives in damp leaf litter and decaying fallen beech logs.