Diomus is a genus of lady beetles in the family Coccinellidae.

There are at least 20 described species in Diomus.

[2][3][4][5][6][7] These 65 species belong to the genus Diomus: Australian species Data sources: i = ITIS,[2] c = Catalogue of Life,[3] g = GBIF,[4] b = Bugguide.net[5]