Curtitoma conoidea is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.

The white shell is narrow and with a long spire.

It contains 7 whorls, convex, without carina.

The plications are slight, somewhat sigmoid, almost obsolete on the body whorl: everywhere covered with moderately strong revolving striae.

[2] This species occurs in European waters off arctic Norway and Russia; on the continental shelf of the Alaskan Beaufort Sea.