The　title　compound,　[CdI2(C12H8N2)(2)],　consists　of　two　1,10-phenanthroline　(phen)　ligands,　two　I　atoms　and　one　Cd　atom.　The　coordination　geometry　around　the　Cd　atom,　which　lies　on　a　twofold　rotation　axis,　is　slightly　distorted　octahedral.　In　the　crystal　structure,　the　dihedral　angle　between　the　two　phen　ligands　is　89.03　(5)degrees.　The　crystal　packing　is　stabilized　by　intermolecular　pi-pi　interactions　of　phen　rings,　with　a　parallel　distance　of　3.362　angstrom,　a　centroid-centroid　distance　of　3.903　angstrom　and　a　slip　distance　of　1.983　angstrom,　and　C　-　H　center　dot　center　dot　center　dot　I　hydrogen　bonding　[I　center　dot　center　dot　center　dot　H　=　3.091　and　2.990　angstrom].