The present disclosure relates to a leg protector. According to an aspect of the present disclosure, disclosed is a leg protector which can protect a wearer's foot and leg and is made of an elastic material, the leg protector comprising: a bottom plate part for supporting a wearer's foot; and a protection part connected to the upper side of the bottom plate part, extending upward therefrom, and formed to cover at least a part of the side and rear portions of the wearer's foot and leg, wherein the protection part includes, on both the left and right sides of the ankle portion thereof, an opening part through which regions corresponding to the wearer's malleoli are exposed to the outside.