Magnetostriction &lgr;shas been measured at room temperature and 80 K in Fe100−xBx(14?x?23 at.&percent;) glasses using metal foil strain gauges. Several compositions were also studied as a function of temperature from 80 K to T ? TC. The single‐ion uniaxial temperature dependence confirmed previously for Fe80B20glass is also observed here for x=20 and 22. At lower boron concentrations departures from this expected temperature dependence are observed. The values of &lgr;s(295K) show a broad maximum of about 35×10−6at x?20 at.&percent;B. Crystallization of the glasses gives rise to a nonmonotonic temperature dependence of &lgr;s.