The cadmium intermetallics RE PtCd ( RE = La, Ce, Pr, Nd, Eu) and CeAuCd were synthesized by induction-melting of the elements in sealed niobium ampoules followed by annealing in muffle furnaces. The samples were characterized by powder X-ray diffraction. The structures of CePtCd (ZrNiAl type, P6¯2m,$P\bar 62m,$ a = 763.8(6), c = 409.1(4) pm, wR 2 = 0.0195, 298 F 2 values, 14 variables) and EuPtCd (TiNiSi type, Pnma , a = 741.3(2), b = 436.4(1), c = 858.0(4) pm, wR 2 = 0.0385, 440 F 2 values, 20 variables) were refined from single-crystal data. The RE PtCd structures exhibit three-dimensional networks of corner- and edge-sharing Cd@Pt 2/6 Pt 2/3 and Cd@Pt 4/4 tetrahedra, which leave cages for the rare earth atoms. Temperature-dependent magnetic susceptibility data of CeAuCd reveal a paramagnetic to antiferromagnetic phase transition at T N = 3.7(5) K.