Agathotoma camarina is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
The length of the shell attains 6 mm, its diameter 2.5 mm.
(Original description) The small, white shell has a hexagonal shape. The blunt glassy protoconch consists of 1+1⁄2 whorls. The teleoconch contains about five subsequent whorls. The surface shows no spiral sculpture under a hand lens. The axial sculpture consists of six strong rounded ribs, running the whole length of the shell and continuous over the spire. The suture is distinct. The aperture is narrow, with a relatively large rounded anal sulcus, a thickened outer lip without internal liration. The inner lip is simple not callous. The columella is short. The siphonal canal is hardly differentiated.
This marine species occurs off the Galápagos Islands.
