The title compound, [CdCl2(C7H6N2)4].4C7H6N2, consists of a Cd(Bzim)4Cl2 complex (Bzim is benzimidazole) lying on a fourfold rotation axis in the space group P4nc, and four benzimidazole molecules which are linked to the coordinated benzimidazole unit by N-H...N hydrogen bonds. One N-H...Cl and three C-H...pi hydrogen bonds link these units into a three-dimensional supramolecular structure.