The present reference work contains information about the structure of multicomponent bulk metallic glasses in terms of Interference Function, Radial Distribution Function, EXAFS Measurement, XANES Spectra, Small-Angle X-ray Scattering, X-ray Photoelectron Spectroscopy, and the following properties of multicomponent metallic glasses, systems from Ca-Cu-Mg-Y to Ni-Ti-Y-Zr: Physical properties (Density, Volume, Thermal Properties, Characteristic Temperatures, Heat Capacity and Heat Effects), Mechanical Properties (Elastic Moduli and Strain as well as plastic features including Tensile Strength, Compressive Strength, Hardness and Strain values, Fatigue Strength, etc.), Magnetic Properties (Curie Temperature, Coercive Force, Remanence, Permeability, Saturation Magnetization, Magnetostriction, Moessbauer Spectroscopy, etc.), Electrical Properties (Resistivity, Hall Effect, Thermoelectric Power, Superconductivity, etc.), and some Chemical Properties (Corrosion Behaviour).