Truncatellina cylindrica is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Truncatellinidae.
The length of the shell attains 1 mm. The width ranges from 0.91-1.01 mm. The height spans 1.80-2.24 mm. The shell notably has shallow sutures and a low, flat whorl. The species lacks apertural teeth.
This species occurs in European countries and islands including: