The title compound, [Pb(4)(C(8)H(4)O(4))(3)Cl(2)](n), consists of a three-dimensional inorganic-organic hybrid framework. The asymmetric unit contains two Pb(2+) cations, one Cl(-) anion and one and a half terephthalate anions, the latter being completed by inversion symmetry. The two Pb(2+) cations are each surrounded by five O atoms and one Cl atom in the form of irregular polyhedra. The cations are linked by μ(2)-O and μ(2)-Cl atoms into binuclear units, which are further extended through Pb-O inter-actions into an undulated inorganic layer parallel to (001). These layers are connected along [001] by the terephthalate groups into a three-dimensional framework.