In the crystal structure of the title complex, [Zn(2)Cl(4)(C(12)H(8)N(2))(2)], each of the two five-coordinated Zn(II) atoms displays a strongly distorted trigonal-bipyramidal geometry defined by two N atoms from the chelate ligand and by one terminal and two bridging chloride anions. The crystal structure is stabilized by C-H⋯Cl inter-actions. There is inter-molecular π-π stacking between adjacent phenanthroline ligands, with a centroid-centroid distance of 3.151 (3) Å.