The　Ce-III　ion　in　the　title　complex,　[Ce(NO3)(3)(C13H12N4O)(2)],　is　12-coordinated　by　six　chelating　nitrate　O　atoms　and　six　donors　(2　O　and　4　N　atoms)　of　two　N＇-[1-(2-pyridyl)　ethylidene]isonicotinohydrazide　ligands,　exhibiting　a　bicapped　pentagonal-antiprism-type　coordination　geometry.　The　title　complex　possesses　C-2　point　symmetry　and　is　located　on　a　twofold　crystallographic　axis.　Each　molecule　is　linked　with　four　surrounding　molecules　by　four　N-H　center　dot　center　dot　center　dot　N　hydrogen　bonds,　resulting　in　an　extended　two-dimensional　layer　parallel　to　the　ab　plane,　while　pi-pi　interactions　between　pyridine　rings　from　neighboring　complex　molecules　connect　the　two-dimensional　layers　into　a　three-dimensional　cerium-organic　supramolecular　structure.