The asymmetric unit of the title compound, [CoCl(2)(C(18)H(12)N(6)S)], contains one half-mol-ecule situated on a twofold rotation axis which passes through the Co and S atoms. The metal centre is in a distorted octahedral CoCl(2)N(4) coordination with the Cl atoms in the axial positions. In the crystal structure, inter-molecular C-H⋯Cl inter-actions help to establish the packing.