There is provided a hook apparatus. A metal bracket is fixed to a vehicle body with a resin case mounted thereon. A shaft is supported by the bracket. A hook including a pair of opposed surfaces and a pair of shaft hole parts formed in the opposed surfaces and is capable of inserting the shaft therethrough. The hook is supported rotatably on the bracket through the shaft. The case includes an elastic piece extending along the rotation shaft direction and capable of coming into elastic contact with the hook. The elastic piece includes radial-direction contact parts capable of coming into contact with sliding contact surfaces respectively formed in the hook around the shaft hole parts in a radially inward direction from outside in a radial direction; and axial-direction contact parts coming into contact with the opposed surfaces of the hook formed around the shaft hole parts.