Discus is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Discidae, the disk snails.

Distribution of the genus Discus include Europe, northern Asia and North America.

[3] The former subgenus Canaridiscus from the Canary Islands off North Africa, which was previously allocated to Atlantica, is now raised to a full genus.

Discus species have small or medium shells with ribs.

[3] Species in this genus include: subgenus Discus Fitzinger, 1833 subgenus Gonyodiscus Fitzinger, 1833 subgenus ?