Eucithara dubiosa is a small sea snail, a marine gastropod mollusk in the family Mangeliidae.
This marine species is found off Mauritius and the Andaman Islands.
The length of the shell attains 7.5 mm.
The color of the shell is white, with a broad brown stain on the back of the body whorl. The ribs are narrow, straight, not on the shoulder. The interstices are closely striated.