Provided are an amorphous metal core that can minimize a core loss in which amorphous thin plate laminates are mutually combined by coupling protrusions and coupling recesses of assembly plates, an induction device, and a method of making the amorphous metal core. The amorphous metal core includes: a number of amorphous metal unit cores that include an amorphous thin plate laminate and a pair of assembly plates that are respectively laminated on the front and rear surfaces of the amorphous thin plate laminate, and are configured to have an I shape, respectively. The induction device includes: an amorphous metal core including a number of amorphous metal unit cores that are formed of an “I” shape, respectively; and at least one coil that is wound on at least one of the amorphous metal unit cores forming the amorphous metal core.