To provide a hook capable of being set on any wall or post, and having sufficient hanging strength.

The hook 10 includes: a screw 40 to be screwed into a wall or the like 15 up to a neck with a head left; a hook base 30 to be attached to the head 41 of the screw; a hooking portion 20 disposed on the front surface of the hook base; and a fitting slit 31 disposed on the rear side of the hook base to allow the head of the screw to be inserted from the lower end face to the center of the hook base. The width of the opening of the fitting slit at a position on the rear surface of the hook base is narrower than the maximum diameter of the head of the screw, and the head 41 of the screw and the hook base 30 are attached to each other by inserting the head 41 of the screw into the fitting slit 31.