Fe100-xGax (x = 10–25) melt-spun ribbons, with a width of 8 mm and a thickness of 0.1 mm, were successfully produced regardless of the Ga content of the Fe-Ga alloys. The saturation magnetization of the Fe-Ga melt-spun ribbons decreased and their permeability increased with increasing Ga content. A magnetostriction of 320 ppm was achieved in the Fe87.5Ga12.5 melt-spun ribbon. Annealing of the melt-spun ribbons resulted in further increases in magnetostriction value. A large magnetostriction value of 500 ppm was achieved in the annealed Fe80Ga20 melt-spun ribbon with the A2 (bcc α-Fe) structure.