Liquid Gd–TM (TM = Mn, Fe, Ni) alloys on the TM-rich side have relatively small and negative temperature coefficients of the magnetic susceptibility χ, which become large and negative with increasing Gd content. The large and negative temperature coefficient of χ for liquid Co gradually weakens at up to 70 at. % Co with the addition of Gd. Liquid Gd and GdcCo1−c alloys with c ≥ 0.5 also have a relatively large and negative temperature coefficient of χ. Liquid Gd–TM alloys on the Gd-rich side obey the Curie law. The magnetic susceptibilities of liquid Gd–Fe and Gd–Co alloys exhibit Curie–Weiss behavior on the TM-rich side. The dependence of χ on the composition for liquid Gd–TM (TM = Mn, Fe, Ni) alloys gradually increases with the Gd content, and that for liquid Gd–Co alloys has a minimum at the composition of 20 at. % Gd. The dependences of χ3d and χ4f on the composition due to the 3d- and 4f-electrons were analyzed by subtracting the corresponding data for liquid La–TM alloys from χ for the liquid Gd–TM ...