Alopia is a genus of gastropods belonging to subfamily Alopiinae of the family Clausiliidae.

[1] [2] (Original description) The dextral or sinistral shell is relatively thin, with a dull, slightly plicate surface.

There is no lunule, and the palatal plicae are numerous.

The spiral lamella is disjointed, and the body whorl is rounded at the base.

[3] The species of this genus are found in Europe.