The glassy alloy containing 2 at% Ge in the Fe 74-x Al 5 P 11 C 6 B 4 Ge x system was found to cause the extension of the supercooled liquid region, ΔT x (= T x -T g ) defined by the difference between crystallization temperature (T x ) and glass transition temperature (T g ) to 60 K, though the ΔT value of the Ge-free Fe 74 Al 5 P 11 C 6 B 4 glassy alloy is 45 K. The remarkable increase in ΔT x is attributed to the increase in T x exceeding the degree of the increase in T g . The Fe 72 Al 5 P 11 C 6 B 4 Ge 2 glassy alloy has good bending ductility and ferromagnetism with Curie temperature at 590 K, in addition to the appearance of the wide supercooled liquid region. The crystallization of the glassy alloy containing 2%Ge takes place through a single stage and the crystallized structure consists of α-Fe, Fe 3 P, Fe 3 C, Fe 3 B and Fe 2 B phases. There are no appreciable changes with Ge content in the crystallized structure and the single-stage crystallization process leading to the simultaneous precipitation of the five crystalline phases. The effectiveness of 2%Ge on the increase in ΔT x is presumably due to the retardation of crystallization caused by the decrease in the formation tendency of Fe 3 C, Fe 3 B and Fe 2 B phases resulting from the existence of Ge which is soluble to Fe and insoluble to B and C.