Plesiotrochus is a genus of sea snails, marine gastropod molluscs in the family Plesiotrochidae.

[2] The shell have an elongate, conical shape.

The subrhomboidal aperture is smooth within and prolonged by a short siphonal canal.

The sculpture shows conspicuous ribs with varices or just spirals.

Species within the genus Plesiotrochus include: