The present disclosure is to provide a locking device capable of easily and conveniently storing an object such as a bicycle, and a bicycle holding apparatus having the locking device. In a first aspect of the present disclosure, there is provided a locking device configured to fix and lock an object having an empty space defined therein, wherein the device comprises: a fixing assembly configured to pivot via a load of an object to fix the object; and a locking assembly configured to control a locked or unlocked state of the fixing assembly via a user input operation, wherein the locking assembly includes a locking insert. In a second aspect of the present disclosure, there is provided a bicycle holding apparatus comprising: a main support supported on a ground and having a predetermined height; a bicycle-support frame having one end supported on the main support and the other end supported on the ground, wherein the bicycle-support frame has an elongate slot defined therein to receive a front wheel and a rear wheel of the bicycle; and the locking device of the first aspect, wherein the locking device is disposed on the bicycle-support frame, wherein the object is the rear wheel of the bicycle, wherein the locking device is configured to fix and lock the rear wheel to the bicycle-support frame.