Kermia cavernosa is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

[1] The length of the shell attains 9 – 10 mm.

The shell is narrowly shouldered.

The shell is white, the shoulder light chestnut, with sometimes a few chestnut spots on the body whorl.

[2] This marine species occurs off the Philippines, Indonesia and in the Persian Gulf and Fiji Islands