Cymatosyrinx carpenteri is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.

[2] The shell is scarcely shouldered, with about twelve short flexuous longitudinal ribs and no spiral sculpture.

[3] (Original description) The rather small, pale brownish shell is solid and slender.

The outer lip shows a broad shallow notch, below the suture.

[4] This species occurs in the demersal zone of the tropical Western Atlantic Ocean.