Curtitoma conoidea is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
The length of the shell varies between 8.5 mm and 15 mm.
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.
This species occurs in European waters off arctic Norway and Russia; on the continental shelf of the Alaskan Beaufort Sea.
