Kurtzina cyrene is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.

Its protoconch is very small, of 1½ smooth whorls, rapidly enlarging, followed by a minutely reticulated turn, of which the sculpture gradually merges into that of the adult type of four succeeding moderately rounded whorls separated by a distinct, not appressed suture.

The spiral sculpture consists of a prominent sharp thread on the periphery slightly angulating it.

The axial sculpture consists of (about 10 on the body whorl) rounded ribs extending from the suture over the base with much wider interspaces.

The incremental lines are close-set, sharp, minutely raised, giving a frosted effect to the surface.