To provide a hair cutter which enables an easy and speedy cutting of hair on the occasion of forming a V-cut part in the hair and attains a hairstyle being uniform and of a high grade, while enhancing safety.

On the occasion of constituting the hair cutter 1 for cutting the hair H, the cutter body 5 of the cutter is constituted by integrating ends 2r and 3r of a pair of opposed base plates 2 and 3 together to make them function as a hinge part 4 and by separating the other ends 2s and 3s by a prescribed width from each other, while a pair of V-shaped edge parts 6 and 7 for forming a plurality of V-cut parts Hc in the hair H is formed on the opposed inner surfaces 2i and 3i on the sides of the other ends 2s and 3s of the base plates 2 and 3.