The magnetic and magnetocaloric properties were investigated in Fe 80−x Mn x P 10 B 7 C 3 (x=13, 14, 15, 16, 18) metallic glasses. Tunable Curie temperature and magnetic entropy change are executed by controlling the content of Mn. The average magnetic moment per (Fe+Mn) atom correlates with the magnetic entropy change ∆S M linearly, which can interpret the decreasing of ∆S M with increasing Mn. Fe 65 Mn 15 P 10 B 7 C 3 alloy exhibits the highest refrigeration capacity of 147.09Jkg −1 and moderate peak magnetic entropy of 1.12Jkg −1 K −1 under maximum applied field of 2T. This family of low-cost Fe-based alloys provides a candidate used as near room-temperature magnetic refrigerant.