Monacha is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Trochulininae Lindholm, 1927 of the family Hygromiidae, the hairy snails and their allies.

[2] The distribution of the genus Monacha includes western Europe, Central Europe, Mediterranean, Asia minor and Turkey (more than 50 species of Monacha),[3] Georgia, Russia, Arabia, Iran, Azerbaijan (1 species).

[4] It is not in Armenia.

[4] The greatest diversity of species is in the Pontic region.

[4] Species within the genus Monacha include:[4] The species Ashfordiana granulata (Alder, 1830) is often also grouped under the genus Monacha.