We report on the magnetic properties of Fex Mn0.3 Al0.7-x (0.275 ⩽x ⩽ 0.525) disordered alloys, which were investigated by means of Mössbauer spectroscopy, ac magnetic susceptibility and magnetization measurements. Our results are summarized in a magnetic phase diagram which includes both a re-entrant spin glass-ferromagnetic transition line for x> 0.425 and a re-entrant spin glass-antiferromagnetic transition line for x< 0.375.