In the binuclear title compound, [Cd(2)(C(2)H(3)O(2))(4)(C(12)H(7)N(3)O(2))(2)], the Cd(II) cations are linked by carboxyl-ate O atoms into a four-membered Cd(2)O(2) rhombic ring with a Cd⋯ Cd separation of 3.7515 (5) Å. Each Cd(II) atom is seven-coordinated by a bidentate 5-nitro-1,10-phenanthroline (5-NO(2)-phen) ligand and two bidentate acetate anions, one of which also acts as a bridge linking the two Cd atoms. The crystal packing is stabilized by π-π inter-actions between the phen rings of neighboring mol-ecules, with centroid-centroid distances of 3.491 (2) (intra-molecular) and 3.598 (2) Å (inter-molecular).