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The title compound, [CdCl2(C6H7N3O)2], was obtained unintentionally as a product of an attempted reaction of CdCl2·2.5H2O and picolinic acid hydrazide, in order to obtain a cadmium(II) complex analogous to a 15-metallacrown-5 complex of the formula [MCu5L5]Xn, with M = a central metal ion, L = picolinic acid hydrazide and X = Cl, but with cadmium the only metal present. The coordination geometry around the CdII atom can be considered as distorted octahedral, with two bidentate picolinic acid hydrazide ligands, each coordinating through their carbonyl O atom and amino N atom, and two chloride anions. In the crystal structure, intermolecular N—H...Cl and N—H...N hydrogen bonds link the molecules into a two-dimensional network parallel to the (100) plane. The pyridine rings of adjacent networks are involved in π–π stacking interactions, the minimum distance between the ring centroids being 3.693 (2) Å.