Abstract: The hair clipper comprises a hollow hand-carriable casing having an outlet adapted to be connected to a vacuum source, such as a domestic vacuum cleaner, and an intake adapted to be applied to the scalp to draw the hair into the casing. A stationary blade and a pivoted cutting blade are located just inside the intake. An air turbine, actuated by the air stream moving through the casing, drives the pivoted blade in a scissor-like reciprocating movement to cut the hairs and remove them by suction. Intake extensions of various lengths and shapes are removably attached to the casing to vary the length of the uncut hair.